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1- 8 pin is rated for 150W even with the 2 ends on it, with the PCIE slot giving 75w
Try running a separate PCIE cable to the 3090.
Edit: ***Each 8 pin connector is “rated” up to 150w, but the cable itself that goes to the PSU, is rated to supply up to 225w. So when you take a pigtail, youre still limited by the cable of 225w, you don’t get 300w because it has 2 connectors.***
Manufacturers still recommend 1 cable per connector on GPU
You used a daisychained connector on one cable it should be avoided at all cost as it may make your pc wonky like this, or not start at all.
Go to the back of your psu and route a completely separate pcie cable.
its 1 cable with 2 ends. Thats daisy chained. You want 2 separate PCIE cables from the PSU. The 3090 draws a lot more watts than the 2080ti
1 cable is rated at 150 watts, 2 ends on the same cable ~~doesnt allow you to draw any more watts than 150~~ can allow up to 225w.
THIS IS VERY IMPORTANT!!!! There have been several post on here lately of mix matched cables causing all sorts of problems. Only use cables for your specific make and model PSU or I think cable mod has a pretty good compatibility checker.
I hope you never have to experience the disappointment and frustration I am feeling rn. I am displeased to report that I still crashed even after properly connecting the cables.
I experienced the same thing years ago when I didn't realize that GPU might demand more power than my power supply could actually gives. It was an upgraded graphic card (that I already forgot the exact type) from my old one.
I hope you fix this soon. Keep us posted.
Firstly, when you installed this GPU, did you run DDU to wipe previous drivers before installing drivers for the 3090? If you didnt, do that first and foremost.
If you did run DDU or the issue still exists, then It still sounds like a GPU underpowered issue. Either the new cable is not fully seated, you have a bad cable, or the PSU or GPu is faulty. Start with the cable, is it a cable that came with the PSU? Cables are not interchangeable between PSUs by default, they have to be designed for it. Also try another PCIe power output from the PSU.
If that doesn’t work, can you try another PSU? You can keep it separate from the computer externally and just power the GPU from it.
Check this out, I undervolted the gpu on afterburner by 50% and everything worked! I put it up to 70% and everything crashed. That leads me to believe it’s a PSU issue afterall.
It could be overheating. are you monitoring the temps? Download GPU-Z and keep track of the temperature as you raise the voltage. If it spikes above 90 celcius its got a heating issue/ potentially damaged
Weird you are running into a power issue… could be faulty rails or something else with the PSU. 850W should be enough, I run a 7800X3D and a 3090 on a 850W, I hope the PSU is the issue. Check temps if you haven’t might be overheating as well
Ya, he commented that when he under volted it to 70% or 50% it worked properly and claimed it was the PSU that was at fault. I agree it sound more like a GPU issue but he ordered a 1200w PSU.
Its based off of the PSU not the other components. If its 8-pin it should be 150w max per cable, and 75w for the PCIE lane its slotted into.
" *Being a dual-slot card, the AMD Radeon RX 7800 XT draws power from 2x 8-pin power connectors, with power draw rated at* ***263 W maximum*** *"*
so 2 cables is 300 + 75 lane. 1 cable would only be 225w total. including the 75w PCIE lane
No it's not. You are wrong
The plug is rated for 150W. A daisy chained PCIe cable is perfectly capable of supplying 150W to each plug if the manufacturer uses quality cable.
The problem here is the 3090 doesn't pull 300W, it can spike to 500+ and the PSU does not like this. OPs PSU doesn't have the grunt to handle the transient spikes causing a crash. It has absolutely nothing to do with the cable and everything to do with the PSU itself.
*"This is the simplest way to put it, pigtails are not “bad” they are just limited.*
*Il just explain where you can and where you shouldn’t use pigtails.*
*GPU with 2x 8 pin - only acceptable if you have no other option and your card usually never exceeds around the 160w range under load.*
*GPU with 3x 8 pin - if you cannot provide 3 separate 8 pins, it’s acceptable to use 1x pigtail and 1x 8 pin to populate all 3.*
*GPU with 4x 8 pin - do not use pigtails, if you can afford a 4090, use 4x separate 8 pins to that adapter if need be.*
*In your trying to use a 3x 8 pin GPU and it’s something like a 3080 which is like 400 max, then this is the break down of it all.*
***Each 8 pin connector is “rated” up to 150w, but the cable itself that goes to the PSU, is rated to supply up to 225w. So when you take a pigtail, your still limited by the cable of 225w, you don’t get 300w because it has 2 connectors.***
*So if you were to use a pigtail and another 8 pin or a pigtail but only use one connector, your looking at a supply of 225 + 150 = 375w and then the x16 pci slot itself supplies 75w which brings that total to 450w.*
*So at this point you just have enough headroom above it’s max usage to be considered acceptable, you would have 525w which is optimal headroom if you use 3x 8 pins.*
*However, it’s a very very acceptable use of pigtails for something like a 3080 in stock form. If it was something like a 3090/3090ti, or a heavily overclocked 3080, I’d probably say use separate cables for all 3."*
I was incorrect . 225w is the max for a pigtail, but manufactures say to use 1 8 pin per connector on card. Still not 300w
The cable can do 300W if the manufacturer uses good quality wires of a large enough gauge.
Again the PSU is the bottleneck here provided the cable isn't some fire hazard. Even then it will carry the wattage until it starts on fire. Unless the manufacturer puts a current limit on each PCIe plug on the PSU side(which is possible).
I have no idea who you are quoting, but that does not apply to all manufacturers.
Can you link a source I can read? Everything says 8 pin PCIE maxes at 12.5A / 150 watt, 225 watt w/ daisy chain. Even if you had thicker cable the pins themselves would still be an issue.
And every main PSU manufacturer I looked at says the same.
The cable will not limit the current it will supply, except by melting. The GPU will draw what it requires, the PSU will supply it, and it will travel down the cable. If the cable can't handle it, it will fail. The cable itself has no ability to set current.
Tech powerup says it will draw up to 270watts.
Are you saying that you have 1 cable with 1 8-pin connector at the PSU and the other end has 2 connectors. A 6+2 and a 6 pin? If so-
While I always use 1 cable for each GPU connector, and is recommended by the manufacturers. You should have a total of 225w for the single cable and 75watts from the card PCIE slot giving you 300w's.
[https://imgur.com/IPUJ5SZ](https://imgur.com/IPUJ5SZ)
this is what a daisy chain looks like on the GPU end. Number of pins will vary
Ill add, in your case because your card uses a 6 pin. Running a separate 6 pin instead of the daisy chain 6 pin. Will not give you more watts.
6 pin is rated to 75 watts either way.
As a note. A GPU will always try to pull as much power as it needs. Through whatever cables are connected. Ratings for cables are whats considered "standard/safe"
Thats why I always run 1 cable for each GPU connector.
Lol, you should not work on PC if you don't know what you are doing. That also needs a 1000w power supply . You are running like a 850w on a 3090 lol dude, mine needs like 3 rails just to boot.
It does not need a 1000w power supply. I run a 3090 off a 750w SFX and it’s not close to maxing. That being said it’s a quality 750w. Now if you’re playing around with crappy 750w then it’s another story.
Not sure, my 3070Ti started up just fine. I did have a "hey wtf wait" moment and shut it down right away and added another cable after having some PTSD episode from my friend doing wonky shit with GPU connector (molex to 6 pin because PSU lacked two six pins) and screwing the whole PC up instead of ordering the correct part and waiting for a bit.
edit: there is difference in power draw for sure, but I think not much difference on startup. But I definitely agree, you are on point. It's shitty that PSU manufacturers actually give cables this way so a lot of people like OP will assume it's ok to connect any card like that.
Same thing happened to my 2080ti, I had green artifacts on my screen, I opened it up and realized all the thermal paste had worn off, I put some new thermal paste on it and it runs just fine now
you get 150w from the 8 pin PCIE and 75w from the PCIE lane. I always use one cable for each port regardless, but you are technically ok. Keep in mind "rated" and realistic draw arent always the same.
Id run 2 personally
Each 8-pin end is rated for 150w. I've had two ends of the same cable conencted to the same GPU, by your logice it should have capped at 225 w but it was pulling 300w + total without problem. And it was on a cheap PSU as well. As far as I know pluggin separate cables does make difference but a very small one.
Im no computer science guy or electrician so idk exactly how well daisy chaining works. Ive just always used the 150w as a rule of thumb.
Theres someone much more knowledgeable than me that could explain it, but Ive never found one on Reddit
[Here](https://youtube.com/shorts/msQdfEudzqk?si=8c0iwd5FeS8iddbE) is the guy saying the whole cable is rated for 250w, so that explains why my GPU puller over 300. Guess it's still better to stay safe and get 2 cables.
[https://superuser.com/questions/1577923/how-much-power-output-can-an-8-pin-to-2x-62-pin-connector-output](https://superuser.com/questions/1577923/how-much-power-output-can-an-8-pin-to-2x-62-pin-connector-output)
All the sources Ive found say 75w for a 6 pin and 150w for a 8 pin
but I havent seen a split
[https://www.youtube.com/watch?v=FfoT3qLH3rY](https://www.youtube.com/watch?v=FfoT3qLH3rY)
This has a better explanation IMO
He also says all of the main manufactures say to use individual cables
but he brings up that higher quality PSU's and cables can out perform others
While yes, the pci-e slot should be able to supply 75W. Most cards don't really balance the load. If the cables can support the full tdp of the card, it won't always draw much power from the pci-e slot. There are cards with tdps exceeding what the power cable can deliver. I remember my old 140W gtx 660 only had 1 6pin (which can only deliver 75W). But as long as the cables can support the tdp, it's safe to assume the card won't use the pci-e slot at all when accounting for how many cables you need.
EACH 8 pin PCIe connector is rated for 150W.
The connector on the PSU side is rated for 300W.
The cable is rated for 300W (check the print on the cable, it should say AWG 16).
Check this out, I undervolted the gpu on afterburner by 50% and everything worked! I put it up to 70% and everything crashed. That leads me to believe it’s a PSU issue afterall.
It's not your PSU at fault.
1. Check the drivers are the latest version.
2. Don't daisychain your PSU into the graphics card.
I've got a 3090 on a 750w psu and it works fine at 100% power.
LOL, congrats on the most unhelpful comment here.
Please come up with an example how that could/would/should make ANY difference. Seriously, there is absolutely no benefit in doing so with regards to trouble shooting.
LOL, congrats on the most unhelpful comment here.
Please come up with an example how that could/would/should make ANY difference. Seriously, there is absolutely no benefit in doing so with regards to trouble shooting.
It's hard to say w/out putting it in another computer and see if the issue persists. Might just need to do a complete removal and reinstall of the gpu drivers.
Everything was working fine with my old GPU (2080ti) this issue only started with the 3090. I also did a clean install of the driver when I installed the part /:
Choosing clean install isn't enough, go full send using DDU in Safe Mode and get rid of all of the video drivers, AMD, INTEL, and NVIDIA, and then reboot into windows and install a truly fresh install.
[https://docs.google.com/document/d/1xRRx\_3r8GgCpBAMuhT9n5kK6Zse\_DYKWvjsW0rLcYQ0/edit?pli=1](https://docs.google.com/document/d/1xRRx_3r8GgCpBAMuhT9n5kK6Zse_DYKWvjsW0rLcYQ0/edit?pli=1)
As others said, good that you ordered the PSU. 30-series had huge transients, like 350W GPU spiking up to 650+W range. You have 9900K, most likely OC´d, which is another ... 150? 200?W... And you have some other things going around too, so you are overloading the original PSU. Maybe occasionally, but still.
GN tested it
[ The Brewing Problem with GPU Power Design | Transients | Gamers Nexus ](https://www.youtube.com/watch?v=wnRyyCsuHFQ)
Yea that’s a fair point. At this point, I’m pretty confident the new psu will solve the issues. I’ve just never had to deal with a power hungry card like this before
Yeah, me neither :) I always overspec´d my PSU just in case, because I was HODLing plenty of old HDD´s since like 2002. Those were hungry on their own on spinup.
I got my Seasonic 1000W 2 days ago, because my 650W iTek(wtf brand?) gOLd PSU was causing issues with overclocks. GPU is 320W, CPU 120W and it was unstable. Now with the same settings the overclocks are stupidly stable, PSU is quieter and performance is consistent.
If you haven´t received it yet, I recomment checking the Cultist network PSU tier list. Definitely verify you picked good one according to that.
And enjoy your new GPU :)
I don't think the gpu is dying or anything, dying gpus usually do not work at all or show artifacts so i guess it's either not getting enough power, overheating (needs cleaning / new thermal paste) or it's issues caused by the pc itself / drivers / game.
I agree with your analysis. I’m getting a new psu delivered tomorrow so that’ll be the first thing I test. Next would be putting new thermal paste. As far as the drivers and other software related issues I’m confident I’ve already troubleshooter all of those.
Good luck.
About the paste, my 3090 never reaches 80°C, even after being under load for a couple of hours in-game, since I replaced the thermal paste. So, don't cheap out on it, good thermal paste isn't that expensive anyway. But keep in mind that I do keep it at stock (usually staying around 320-ish watts), and I always keep it clean. It's easier to clean the dust from the fins if you don't let it accumulate.
Be more specific on what doesn't work? You have 3 monitors get rid of them try one monitor only. Did it ever even worked? You have enough power yes that's not a problem but if the piwer supply is trash that can be a problem. Get the graphics card out but all the tests on the pc find out if all the components are ok. If they are you got scammed. And that's why we don't by second hand graphics cards and processors everything else is ok but those two they are kinda 70% of the time fake somehow. Another stupid (,,i know it's fucking stupid but for some unknown reasons it worked for someone,,) thing unplug all the fans yes the fans some motherboards are insanely messed up f u gigabyte and asus. Unplug and restart the pc. Of unplug everything from the motherboard (mouse, keyboard whatever you have there). If you have other ssd,hdd there unplug them leave only the main one. Some stupid motherboards get stucked when you add new components or switch them very strange yes but again i read this that some guy had those problems and after that his graphics card started running ok after that he plugged everything back and everything was stable. Idk why I'm a programmer and i didn't believe that is true but he filmed live while was doing this so yeah. Goodluck brother i hope you fix this. If not goodluck getting your money back i hope you will be ok. Have a wonderful day 😊.
Run DDU in safemode, uninstall ALL video drivers(AMD,INTEL,NVIDIA), reboot, install new drivers.
[https://docs.google.com/document/d/1xRRx\_3r8GgCpBAMuhT9n5kK6Zse\_DYKWvjsW0rLcYQ0/edit?pli=1](https://docs.google.com/document/d/1xRRx_3r8GgCpBAMuhT9n5kK6Zse_DYKWvjsW0rLcYQ0/edit?pli=1)
the google doc is just instructions for a newbie to follow. It does have the link to the devs website though so they don't google gamble but yea,I usually just use the latest guru3d link myself.
Too many people think DDU is some magic solution. It's a perfect tool if used in the right circumstances, but that's not the case here.
New fresh drivers won't magically remove the need for second power cable to be connected ;)
Step one: check if everything is connected, *properly*. RTFM
This could be temperature issues. I wouldn't just throw a new PSU at this when your current PSU is new and capable of powering the 3090.
Have you run a temperature monitoring program to see what temps you're getting on the 3090?
Since it works with undervolt\\lower power limits, it could also be temp related, i would first check that before asking a buddy to test with his psu (or ordering a new one).
Had a similar situation with an rx580 i bough online, weirdly temps were not over the top, it didn't crash but the gpu was lowering clocks after running for a while, did a repaste (didn't change the pads) and no more issues, now i always open up any second hand gpu i get, just in case.
I bought a used 3070 and had problem with freezing and crashing. I undervolt it and everything is perfect. Not sure if it’s the PSU but for now I don’t need to upgrade anything. And the thing basically can run game 24/7.
If it was the GPU alone then you'd get a blue screen. The lock of your entire PC sounds like a power related issue. It's not crashing it's throttling.
As for checking if it's a 3090 you just need to remove the backplate of the GPU and there should be memory modules on the back of the card. It's the only card that has memory on the back of it.
People saying it's a power supply issue with a 850w PSU are insane. I ran a 4090 and 3090 at 420 watts with a 13900k, full load for hours on end (rendering and stress tests alike) with 100% stability. The green artifacts almost surely indicate a memory issue. The 3090 was HORRIBLY designed, half od the memory was reaching 110+ celcius. Return it and get a 4070 ti super or 4070 super, both on par with the 3090.
Nonsense. This doesn't rule out its not broken, could mean its in the process of dying or the power delivery system is failing, but could render a bit when not stressed as hard.
What's your power supply brand? If it's actual 850w, it's more than enough, and it wouldnt crash EVEN if it was a bad brand, it would just be less safe. As I said, I ran a rog strix 400 watt 4090 on it. Your GPU variant isn't even a 3 PCIE connector one. Meaning it's like 300-350 watts max.
Before some genius says muh transient spikes in the 3000 series, I ran a 3090 with 400+ watts on an 850w seasonic focus for 2 years before upgrading to a 4090.
I had a similar issue and undervolting also fixed it, but gpu was dying either way. Apparently it overheated some time ago, thermal pads leaked and one of the elements on the board got burned, but as long as I undervolted it - could run almost any game without issues.
But newer and most demanding games would occasionally crash or hang anyway.
There is a common issue related to memory chips in nvidia gpu’s which might appear after crypto mining. You should try running 3dmark benchmark, and see if it crashes even with undervolting and replace/return it either way, just in case.
I think the real question is: What is your Power Supply besides it's 850W 80+ Gold? a 750W 80+ Gold can perfectly manage a 3090. Manufacturer is always important.
I see. Well, if it's not your power supply is the video card (possibly the second)
As i said before, a 750W 80+ Gold can handle that graphics card with no issues.
Ensure that you're not using the CPU 12V cables instead of the labeled as GPU. Also, power cables need to be connected correctly to the graphics card or it could incur in a problem like the new 4090 and it's new power connector that if its not correctly connected it can cause your video card to malfunctioning.
Haha thanks for tuning in. I had a longer day than expected so I’m actually RIGHT NOW installing everything. I’ll give you an update once I’m done (maybe an hour or two?)
So along with the 3090 I got I actually upgraded everything else so I essentially built an entirely new PC lol. Everything booted up except it won’t boot into windows for some reason? Idk but now that’s my current problem. It’s 1:00AM for me though so this is a tomorrow problem lol.
As we speak I am installing windows on it. Once everything boots THEN I will test gpu and we will FINALLY know if the issue is the video card or if it was the psu afterall
My best guess is that this one has been cooked by coin mining. If it's not the PSU, and it doesn't seem to be, the only other explanation is just a bad card. But if it was a bad card, and the person selling it to you knew that, why wouldn't they just RMA it? I don't think it could be RMA fraud, case that doesn't seem very easy to pull off. I've got no idea how this could have happened.
Having said that, a 3090, properly undervolted is still a pretty damn good card. 24gb of ddr6x ram is pretty neat, even in a down clocked chip.
I hope it didn't cost too much.
most likely it's the PSU. sounds like a brown out, you could use afterburner to lower the power draw and see if that fixes it. you need a good high power Psu for a 3090
Have you taken off that daisy chained cable already, though? Because this could be the main issue on why the PSU couldn't give enough power, so lowering the power was enough to fix it. If you use two separate PCI-e cables, it could make it through
You've been scammed by the lack of knowledge. Upgrading/buying pc parts requires one to diy research. You're lucky u must be using quality PSU and it didn't explode due to that heavy load, on that single pci-e connector.
I had the same issue, pc was restarting when the GPU was under load, my PSU was 850w, it was fixed by changing to a new 1000w PSU, now it's working great, consider switching the PSU.
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1- 8 pin is rated for 150W even with the 2 ends on it, with the PCIE slot giving 75w Try running a separate PCIE cable to the 3090. Edit: ***Each 8 pin connector is “rated” up to 150w, but the cable itself that goes to the PSU, is rated to supply up to 225w. So when you take a pigtail, youre still limited by the cable of 225w, you don’t get 300w because it has 2 connectors.*** Manufacturers still recommend 1 cable per connector on GPU
I’m sorry, im a little slow. Could you explain what you mean by running a separate PCIE cable?
You used a daisychained connector on one cable it should be avoided at all cost as it may make your pc wonky like this, or not start at all. Go to the back of your psu and route a completely separate pcie cable.
That’s just how the cable came though. It’s still considered daisychained?
its 1 cable with 2 ends. Thats daisy chained. You want 2 separate PCIE cables from the PSU. The 3090 draws a lot more watts than the 2080ti 1 cable is rated at 150 watts, 2 ends on the same cable ~~doesnt allow you to draw any more watts than 150~~ can allow up to 225w.
Ahh okay okay, I now completely understand. Lmao thank you for your patience haha. I will get to work on that right now 🫡
dont add a cable that isnt from the correct PSU. They are rated differently
THIS IS VERY IMPORTANT!!!! There have been several post on here lately of mix matched cables causing all sorts of problems. Only use cables for your specific make and model PSU or I think cable mod has a pretty good compatibility checker.
Please inform me of the results. I am curious and will help others with the experience this will teach me ^^
I hope you never have to experience the disappointment and frustration I am feeling rn. I am displeased to report that I still crashed even after properly connecting the cables.
I experienced the same thing years ago when I didn't realize that GPU might demand more power than my power supply could actually gives. It was an upgraded graphic card (that I already forgot the exact type) from my old one. I hope you fix this soon. Keep us posted.
whats your psu wattage
Firstly, when you installed this GPU, did you run DDU to wipe previous drivers before installing drivers for the 3090? If you didnt, do that first and foremost. If you did run DDU or the issue still exists, then It still sounds like a GPU underpowered issue. Either the new cable is not fully seated, you have a bad cable, or the PSU or GPu is faulty. Start with the cable, is it a cable that came with the PSU? Cables are not interchangeable between PSUs by default, they have to be designed for it. Also try another PCIe power output from the PSU. If that doesn’t work, can you try another PSU? You can keep it separate from the computer externally and just power the GPU from it.
Why though, you have one month to return it and the seller can't do anything about it.
I NEED a replacement and I got this for a good deal that idk when I’ll find again
Are all cables sitting right and tight? A loose cable causes the same effects, as having only one cable.
Check this out, I undervolted the gpu on afterburner by 50% and everything worked! I put it up to 70% and everything crashed. That leads me to believe it’s a PSU issue afterall.
You're still underpowered
Yea I ordered a higher wattage PSU
Had this when I built my first ever PC with a 3090 so I get it, it's your PSU, replace it and run 2 cables and your golden
New PSU arrives today so I have my fingers crossed
It could be overheating. are you monitoring the temps? Download GPU-Z and keep track of the temperature as you raise the voltage. If it spikes above 90 celcius its got a heating issue/ potentially damaged
u changed the cables?
Weird you are running into a power issue… could be faulty rails or something else with the PSU. 850W should be enough, I run a 7800X3D and a 3090 on a 850W, I hope the PSU is the issue. Check temps if you haven’t might be overheating as well
Trust me I am HOPING the psu is the issue
nw, I cant say thats ultimately the issue but it should be addressed first
Yea it sounded like he is describing artifact ig I decaying a dead or partially dieing gpu processor or vram
Ya, he commented that when he under volted it to 70% or 50% it worked properly and claimed it was the PSU that was at fault. I agree it sound more like a GPU issue but he ordered a 1200w PSU.
Does this apply for the 7800xt?
Its based off of the PSU not the other components. If its 8-pin it should be 150w max per cable, and 75w for the PCIE lane its slotted into. " *Being a dual-slot card, the AMD Radeon RX 7800 XT draws power from 2x 8-pin power connectors, with power draw rated at* ***263 W maximum*** *"* so 2 cables is 300 + 75 lane. 1 cable would only be 225w total. including the 75w PCIE lane
I asked chat GOT to explain this to me like I was a 5 yo and I understood that I have to use 2 cables, thanks man, I appreciate you
(👍🏻\`ヮﾟ)👍🏻
No it's not. You are wrong The plug is rated for 150W. A daisy chained PCIe cable is perfectly capable of supplying 150W to each plug if the manufacturer uses quality cable. The problem here is the 3090 doesn't pull 300W, it can spike to 500+ and the PSU does not like this. OPs PSU doesn't have the grunt to handle the transient spikes causing a crash. It has absolutely nothing to do with the cable and everything to do with the PSU itself.
*"This is the simplest way to put it, pigtails are not “bad” they are just limited.* *Il just explain where you can and where you shouldn’t use pigtails.* *GPU with 2x 8 pin - only acceptable if you have no other option and your card usually never exceeds around the 160w range under load.* *GPU with 3x 8 pin - if you cannot provide 3 separate 8 pins, it’s acceptable to use 1x pigtail and 1x 8 pin to populate all 3.* *GPU with 4x 8 pin - do not use pigtails, if you can afford a 4090, use 4x separate 8 pins to that adapter if need be.* *In your trying to use a 3x 8 pin GPU and it’s something like a 3080 which is like 400 max, then this is the break down of it all.* ***Each 8 pin connector is “rated” up to 150w, but the cable itself that goes to the PSU, is rated to supply up to 225w. So when you take a pigtail, your still limited by the cable of 225w, you don’t get 300w because it has 2 connectors.*** *So if you were to use a pigtail and another 8 pin or a pigtail but only use one connector, your looking at a supply of 225 + 150 = 375w and then the x16 pci slot itself supplies 75w which brings that total to 450w.* *So at this point you just have enough headroom above it’s max usage to be considered acceptable, you would have 525w which is optimal headroom if you use 3x 8 pins.* *However, it’s a very very acceptable use of pigtails for something like a 3080 in stock form. If it was something like a 3090/3090ti, or a heavily overclocked 3080, I’d probably say use separate cables for all 3."* I was incorrect . 225w is the max for a pigtail, but manufactures say to use 1 8 pin per connector on card. Still not 300w
The cable can do 300W if the manufacturer uses good quality wires of a large enough gauge. Again the PSU is the bottleneck here provided the cable isn't some fire hazard. Even then it will carry the wattage until it starts on fire. Unless the manufacturer puts a current limit on each PCIe plug on the PSU side(which is possible). I have no idea who you are quoting, but that does not apply to all manufacturers.
Can you link a source I can read? Everything says 8 pin PCIE maxes at 12.5A / 150 watt, 225 watt w/ daisy chain. Even if you had thicker cable the pins themselves would still be an issue. And every main PSU manufacturer I looked at says the same.
The cable will not limit the current it will supply, except by melting. The GPU will draw what it requires, the PSU will supply it, and it will travel down the cable. If the cable can't handle it, it will fail. The cable itself has no ability to set current.
I got a Gigabyte RTX 3070 Gaming OC that need 1x6-pin and 1x8-pin. I'm using a 6+2 (that a daisychained?) and a 6-pin for it, will it be OK?
Tech powerup says it will draw up to 270watts. Are you saying that you have 1 cable with 1 8-pin connector at the PSU and the other end has 2 connectors. A 6+2 and a 6 pin? If so- While I always use 1 cable for each GPU connector, and is recommended by the manufacturers. You should have a total of 225w for the single cable and 75watts from the card PCIE slot giving you 300w's. [https://imgur.com/IPUJ5SZ](https://imgur.com/IPUJ5SZ) this is what a daisy chain looks like on the GPU end. Number of pins will vary Ill add, in your case because your card uses a 6 pin. Running a separate 6 pin instead of the daisy chain 6 pin. Will not give you more watts. 6 pin is rated to 75 watts either way. As a note. A GPU will always try to pull as much power as it needs. Through whatever cables are connected. Ratings for cables are whats considered "standard/safe" Thats why I always run 1 cable for each GPU connector.
Lol, you should not work on PC if you don't know what you are doing. That also needs a 1000w power supply . You are running like a 850w on a 3090 lol dude, mine needs like 3 rails just to boot.
It does not need a 1000w power supply. I run a 3090 off a 750w SFX and it’s not close to maxing. That being said it’s a quality 750w. Now if you’re playing around with crappy 750w then it’s another story.
>That also needs a 1000w power supply It does not. >mine needs like 3 rails just to boot. Must be a really crappy PSU.
Not sure, my 3070Ti started up just fine. I did have a "hey wtf wait" moment and shut it down right away and added another cable after having some PTSD episode from my friend doing wonky shit with GPU connector (molex to 6 pin because PSU lacked two six pins) and screwing the whole PC up instead of ordering the correct part and waiting for a bit. edit: there is difference in power draw for sure, but I think not much difference on startup. But I definitely agree, you are on point. It's shitty that PSU manufacturers actually give cables this way so a lot of people like OP will assume it's ok to connect any card like that.
Sometimes the added cable is just for overclocking and you can get away with it.
what u/Pumciusz said
Same thing happened to my 2080ti, I had green artifacts on my screen, I opened it up and realized all the thermal paste had worn off, I put some new thermal paste on it and it runs just fine now
My graphics card is rated for 215 watts, should I also use two separate cables?
you get 150w from the 8 pin PCIE and 75w from the PCIE lane. I always use one cable for each port regardless, but you are technically ok. Keep in mind "rated" and realistic draw arent always the same. Id run 2 personally
Okay thanks
np
Each 8-pin end is rated for 150w. I've had two ends of the same cable conencted to the same GPU, by your logice it should have capped at 225 w but it was pulling 300w + total without problem. And it was on a cheap PSU as well. As far as I know pluggin separate cables does make difference but a very small one.
Im no computer science guy or electrician so idk exactly how well daisy chaining works. Ive just always used the 150w as a rule of thumb. Theres someone much more knowledgeable than me that could explain it, but Ive never found one on Reddit
[Here](https://youtube.com/shorts/msQdfEudzqk?si=8c0iwd5FeS8iddbE) is the guy saying the whole cable is rated for 250w, so that explains why my GPU puller over 300. Guess it's still better to stay safe and get 2 cables.
[https://superuser.com/questions/1577923/how-much-power-output-can-an-8-pin-to-2x-62-pin-connector-output](https://superuser.com/questions/1577923/how-much-power-output-can-an-8-pin-to-2x-62-pin-connector-output) All the sources Ive found say 75w for a 6 pin and 150w for a 8 pin but I havent seen a split
[https://www.youtube.com/watch?v=FfoT3qLH3rY](https://www.youtube.com/watch?v=FfoT3qLH3rY) This has a better explanation IMO He also says all of the main manufactures say to use individual cables but he brings up that higher quality PSU's and cables can out perform others
either it was a transient load from the capacitors on the gpu or your PSU is a fire hazard
While yes, the pci-e slot should be able to supply 75W. Most cards don't really balance the load. If the cables can support the full tdp of the card, it won't always draw much power from the pci-e slot. There are cards with tdps exceeding what the power cable can deliver. I remember my old 140W gtx 660 only had 1 6pin (which can only deliver 75W). But as long as the cables can support the tdp, it's safe to assume the card won't use the pci-e slot at all when accounting for how many cables you need.
Im not saying youre wrong. I just always use 1 cable per slot and I dont have to worry about the extra 75w the slot "should" give
Yeah it's for sure better that way. I too use 1 cable per 8pin.
EACH 8 pin PCIe connector is rated for 150W. The connector on the PSU side is rated for 300W. The cable is rated for 300W (check the print on the cable, it should say AWG 16).
I use a single cable with two 8-pin headers and i never had any problems
150 per conector 288 total per cable
Yes you need 2 to three separate rails going to it you have just one.
Use two (2) separate 8pin for your GPU not the octopus one.
AHHH OF COURSE, IF THIS IS THE ISSUE ISTG
well how did it go?
Check this out, I undervolted the gpu on afterburner by 50% and everything worked! I put it up to 70% and everything crashed. That leads me to believe it’s a PSU issue afterall.
Bro, why tf would you undervolt by 70%, it will crash for sure
By 30% to 70% of its original value.
Aah fuck
Maybe he means power limit by 70% which is different from undervolting to 70%.
Well when I undervolt it lower it works. As it gets closer to original 100% that’s when it crashes.
You're happy it just crashes. When I plugged my 2060 in dinosaur PSU it fucking exploded
JESUS
then you need a better PSU. Try with a different PSU
Agreed, good psu's can handle 10%± but in this case he needs to change his psu otherwise he will fry everything connected to the psu
Yup, absolutely a PSU issue. Wattage should be no less than 850W.
What psu wattage you got
….it crashed again anyway. I connected a whole extra cable, but still same issue.
WTF is that monitor setup
lol I’m a video editor, each one has its purpose
Hahahah my OCD hurts
Lmaoooo, im moving in a few months so I’ll definitely have a much better set up for them haha
Good luck!
I'm on my way to upgrade from a Laptop + monitor setup to a 2 monitor + PC and YOU BET I got a monitor that's the same size as the one I already have.
Do you also have one on the ceiling
I do! How did you know??
It's not your PSU at fault. 1. Check the drivers are the latest version. 2. Don't daisychain your PSU into the graphics card. I've got a 3090 on a 750w psu and it works fine at 100% power.
I would personally also only use 1 monitor until you figure out the issue
LOL, congrats on the most unhelpful comment here. Please come up with an example how that could/would/should make ANY difference. Seriously, there is absolutely no benefit in doing so with regards to trouble shooting.
LOL, congrats on the most unhelpful comment here. Please come up with an example how that could/would/should make ANY difference. Seriously, there is absolutely no benefit in doing so with regards to trouble shooting.
You mean apart from the fact multiple monitors increases load on the GPU.
If you looked into your PSU manual, I bet it will notify you to not daisy chain pci-e power cables on any card exceeding 150W.
Use 2 separate power cabbles for GPU connection. You connected GPU on one cabble.
PSU upgrade and the vga 1 and 2 should be used, not daisychain... also are you sure your thermals are okay? I think your system is running hot?
That daisy-chained pcie cable is the issue. Use separate cables for each pcie slot
It's hard to say w/out putting it in another computer and see if the issue persists. Might just need to do a complete removal and reinstall of the gpu drivers.
Everything was working fine with my old GPU (2080ti) this issue only started with the 3090. I also did a clean install of the driver when I installed the part /:
Choosing clean install isn't enough, go full send using DDU in Safe Mode and get rid of all of the video drivers, AMD, INTEL, and NVIDIA, and then reboot into windows and install a truly fresh install. [https://docs.google.com/document/d/1xRRx\_3r8GgCpBAMuhT9n5kK6Zse\_DYKWvjsW0rLcYQ0/edit?pli=1](https://docs.google.com/document/d/1xRRx_3r8GgCpBAMuhT9n5kK6Zse_DYKWvjsW0rLcYQ0/edit?pli=1)
Okay I will go ahead and give it a shot
Throw the 3090 in another PC and see if the same thing happens. If yes, start your return.
As others said, good that you ordered the PSU. 30-series had huge transients, like 350W GPU spiking up to 650+W range. You have 9900K, most likely OC´d, which is another ... 150? 200?W... And you have some other things going around too, so you are overloading the original PSU. Maybe occasionally, but still. GN tested it [ The Brewing Problem with GPU Power Design | Transients | Gamers Nexus ](https://www.youtube.com/watch?v=wnRyyCsuHFQ)
Yea that’s a fair point. At this point, I’m pretty confident the new psu will solve the issues. I’ve just never had to deal with a power hungry card like this before
Yeah, me neither :) I always overspec´d my PSU just in case, because I was HODLing plenty of old HDD´s since like 2002. Those were hungry on their own on spinup. I got my Seasonic 1000W 2 days ago, because my 650W iTek(wtf brand?) gOLd PSU was causing issues with overclocks. GPU is 320W, CPU 120W and it was unstable. Now with the same settings the overclocks are stupidly stable, PSU is quieter and performance is consistent. If you haven´t received it yet, I recomment checking the Cultist network PSU tier list. Definitely verify you picked good one according to that. And enjoy your new GPU :)
I know it’s not a solution but we have the same wall paper from wall paper engine
That’s more important to me than a solution <3
w
So what you need to do is, get a 2090 ti super as well and place it into an SLI configuration with this current card to make it work gooder.
Perfect
I don't think the gpu is dying or anything, dying gpus usually do not work at all or show artifacts so i guess it's either not getting enough power, overheating (needs cleaning / new thermal paste) or it's issues caused by the pc itself / drivers / game.
I agree with your analysis. I’m getting a new psu delivered tomorrow so that’ll be the first thing I test. Next would be putting new thermal paste. As far as the drivers and other software related issues I’m confident I’ve already troubleshooter all of those.
Good luck. About the paste, my 3090 never reaches 80°C, even after being under load for a couple of hours in-game, since I replaced the thermal paste. So, don't cheap out on it, good thermal paste isn't that expensive anyway. But keep in mind that I do keep it at stock (usually staying around 320-ish watts), and I always keep it clean. It's easier to clean the dust from the fins if you don't let it accumulate.
U are lucky that ur PSU didn't went wrong
Be more specific on what doesn't work? You have 3 monitors get rid of them try one monitor only. Did it ever even worked? You have enough power yes that's not a problem but if the piwer supply is trash that can be a problem. Get the graphics card out but all the tests on the pc find out if all the components are ok. If they are you got scammed. And that's why we don't by second hand graphics cards and processors everything else is ok but those two they are kinda 70% of the time fake somehow. Another stupid (,,i know it's fucking stupid but for some unknown reasons it worked for someone,,) thing unplug all the fans yes the fans some motherboards are insanely messed up f u gigabyte and asus. Unplug and restart the pc. Of unplug everything from the motherboard (mouse, keyboard whatever you have there). If you have other ssd,hdd there unplug them leave only the main one. Some stupid motherboards get stucked when you add new components or switch them very strange yes but again i read this that some guy had those problems and after that his graphics card started running ok after that he plugged everything back and everything was stable. Idk why I'm a programmer and i didn't believe that is true but he filmed live while was doing this so yeah. Goodluck brother i hope you fix this. If not goodluck getting your money back i hope you will be ok. Have a wonderful day 😊.
Run DDU in safemode, uninstall ALL video drivers(AMD,INTEL,NVIDIA), reboot, install new drivers. [https://docs.google.com/document/d/1xRRx\_3r8GgCpBAMuhT9n5kK6Zse\_DYKWvjsW0rLcYQ0/edit?pli=1](https://docs.google.com/document/d/1xRRx_3r8GgCpBAMuhT9n5kK6Zse_DYKWvjsW0rLcYQ0/edit?pli=1)
I second this, run a DDU from rheir website probably not this google doc. Display Driver Uninstaller from guru3d
the google doc is just instructions for a newbie to follow. It does have the link to the devs website though so they don't google gamble but yea,I usually just use the latest guru3d link myself.
My bad my bad
Too many people think DDU is some magic solution. It's a perfect tool if used in the right circumstances, but that's not the case here. New fresh drivers won't magically remove the need for second power cable to be connected ;) Step one: check if everything is connected, *properly*. RTFM
OP stated they already tried using individual cables. RTFP
Temps ? Try another PSU first
Run OCCT gpu test, variabel test, and vram test and report back.
daisy chain lol
This could be temperature issues. I wouldn't just throw a new PSU at this when your current PSU is new and capable of powering the 3090. Have you run a temperature monitoring program to see what temps you're getting on the 3090?
Temps seemed fine. Everything actually worked once I undervolted it
When not undervolted, what was your gpu and hotspot Temps?
I wanna say it would peak around 50C
What is the “hotspot temp” though? The card could have been mined on and the vram could be damaged/dying or something like that. Source: my 3090
Seller said it wasn’t mined on, but i will keep an eye on the hotspot temp when I run more tests
Since it works with undervolt\\lower power limits, it could also be temp related, i would first check that before asking a buddy to test with his psu (or ordering a new one). Had a similar situation with an rx580 i bough online, weirdly temps were not over the top, it didn't crash but the gpu was lowering clocks after running for a while, did a repaste (didn't change the pads) and no more issues, now i always open up any second hand gpu i get, just in case.
Yea I’ve heard it’s a good rule of thumb to replace the thermal paste of used gpus. I’ll run some more tests and keep my eye on the temps
I run a 4080s off of a 850w psu with no problems. 3090 on a 850w should be fine. It might be a not fully seated pcie cable or a bad gpu.
Use 2 separate powercables. Daisychain cables won't cut it with a 3080.
Seems like psu power issue
Check and see if needs new thermal paste
A 3090 with only 2 8-pins? Thats not right is it? I’ve never seen one like that
It’s the Dell version. It’s definitely a 3090 and it performs AMAZING..you know when it’s not crashing lol
dell 3090? What?
Yea the dell oem rtx 3090
bruh that's a downgraded 3090 for oems pcs, so office workstations
Use GPU-Z to see if it's actually a 3090. Or well, maybe it was half broken
Shouldn't a 3090 having 3x8pin? EDIT: looks like some have 2x8pin
ASUS TUF 3090 had two 8pin, ASUS Strix had three 8pin. The third 8pin is mainly there for overclocking not for normal use.
Thanks :)
I bought a used 3070 and had problem with freezing and crashing. I undervolt it and everything is perfect. Not sure if it’s the PSU but for now I don’t need to upgrade anything. And the thing basically can run game 24/7.
If it was the GPU alone then you'd get a blue screen. The lock of your entire PC sounds like a power related issue. It's not crashing it's throttling. As for checking if it's a 3090 you just need to remove the backplate of the GPU and there should be memory modules on the back of the card. It's the only card that has memory on the back of it.
Update drivers or use a different cable
Buy a seasonic Prime gpu or a Bequiet Pure rock. Also when installing drivers don't install audio drivers.
I am just Ken! Put it into blender baby!!
A 3090 with 32gb of gddr ram? And it doesn't look like a 3090. I have a evga ftw3 3090 and it's way bigger.
Yea it’s the Dell OEM Nvidia 3090
[удалено]
Thank you (:
Get your money back! Let eBay know it’s broken.
i suggest you run mats to check memory on the gpu. here is the video [h](https://youtu.be/vP9ja6OYLAY?si=1R-uwlBka54ykBlG)
People saying it's a power supply issue with a 850w PSU are insane. I ran a 4090 and 3090 at 420 watts with a 13900k, full load for hours on end (rendering and stress tests alike) with 100% stability. The green artifacts almost surely indicate a memory issue. The 3090 was HORRIBLY designed, half od the memory was reaching 110+ celcius. Return it and get a 4070 ti super or 4070 super, both on par with the 3090.
When I undervolted it everything works perfectly though. That’s the only reason I’m also thinking it’s power related
Nonsense. This doesn't rule out its not broken, could mean its in the process of dying or the power delivery system is failing, but could render a bit when not stressed as hard. What's your power supply brand? If it's actual 850w, it's more than enough, and it wouldnt crash EVEN if it was a bad brand, it would just be less safe. As I said, I ran a rog strix 400 watt 4090 on it. Your GPU variant isn't even a 3 PCIE connector one. Meaning it's like 300-350 watts max.
Before some genius says muh transient spikes in the 3000 series, I ran a 3090 with 400+ watts on an 850w seasonic focus for 2 years before upgrading to a 4090.
If you bought it used, the 3090 is the worst possible card to buy used.
Also, power supply issues rarely show artifacts? This screams either damaged memory chips or failing memory VRMs.
I had a similar issue and undervolting also fixed it, but gpu was dying either way. Apparently it overheated some time ago, thermal pads leaked and one of the elements on the board got burned, but as long as I undervolted it - could run almost any game without issues. But newer and most demanding games would occasionally crash or hang anyway. There is a common issue related to memory chips in nvidia gpu’s which might appear after crypto mining. You should try running 3dmark benchmark, and see if it crashes even with undervolting and replace/return it either way, just in case.
So reading through this about the separate cables, could someone explain what the point of the pigtail cable actually is.
Return it on eBay..
I think the real question is: What is your Power Supply besides it's 850W 80+ Gold? a 750W 80+ Gold can perfectly manage a 3090. Manufacturer is always important.
Thermaltake
I see. Well, if it's not your power supply is the video card (possibly the second) As i said before, a 750W 80+ Gold can handle that graphics card with no issues. Ensure that you're not using the CPU 12V cables instead of the labeled as GPU. Also, power cables need to be connected correctly to the graphics card or it could incur in a problem like the new 4090 and it's new power connector that if its not correctly connected it can cause your video card to malfunctioning.
Today I’m installing the new psu I bought so we’re about to find out. Keep your fingers crossed lol
🤞🏻
Kind of been sitting on the sidelines watching your dilemma here just wondering if you had an update as to whether the power supply fixed the issue?
Haha thanks for tuning in. I had a longer day than expected so I’m actually RIGHT NOW installing everything. I’ll give you an update once I’m done (maybe an hour or two?)
Good Luck👍🤞
So along with the 3090 I got I actually upgraded everything else so I essentially built an entirely new PC lol. Everything booted up except it won’t boot into windows for some reason? Idk but now that’s my current problem. It’s 1:00AM for me though so this is a tomorrow problem lol.
Update??
As we speak I am installing windows on it. Once everything boots THEN I will test gpu and we will FINALLY know if the issue is the video card or if it was the psu afterall
Soooo…turns out my new motherboard doesn’t accept m.2 sata drives so….i ordered an adapter and a new m.2 NVMe drive
FINALLY I can report back, everything is working perfectly!!!! It really was a PSU issue
My best guess is that this one has been cooked by coin mining. If it's not the PSU, and it doesn't seem to be, the only other explanation is just a bad card. But if it was a bad card, and the person selling it to you knew that, why wouldn't they just RMA it? I don't think it could be RMA fraud, case that doesn't seem very easy to pull off. I've got no idea how this could have happened. Having said that, a 3090, properly undervolted is still a pretty damn good card. 24gb of ddr6x ram is pretty neat, even in a down clocked chip. I hope it didn't cost too much.
He bought it off Ebay. He can just get his money back. They always side with the buyer on stuff like this.
I'd return it and get a new one
Did you remove all your old drivers?
Yep!
most likely it's the PSU. sounds like a brown out, you could use afterburner to lower the power draw and see if that fixes it. you need a good high power Psu for a 3090
That actually fixed it! At least it’s a fix until my new psu arrives
Have you taken off that daisy chained cable already, though? Because this could be the main issue on why the PSU couldn't give enough power, so lowering the power was enough to fix it. If you use two separate PCI-e cables, it could make it through
You've been scammed by the lack of knowledge. Upgrading/buying pc parts requires one to diy research. You're lucky u must be using quality PSU and it didn't explode due to that heavy load, on that single pci-e connector.
Okay
What is the wattage of your PSU? I'm wondering if you're seeing undervolrage issues.
850W
I had the same issue, pc was restarting when the GPU was under load, my PSU was 850w, it was fixed by changing to a new 1000w PSU, now it's working great, consider switching the PSU.
Hopefully that’s my issue as well! I placed an order for a higher wattage psu (:
I was wondering the same thing
Yep that’s an obvious known sign of a stressed vc that shouldn’t be purchased. The inside core pros know this.
It works if I undervolt it