I have an EVGA 3080 FTW3 ULTRA - It cannot pass an OC Scanner with Precision (Latest) or MSI Afterburner (Latest). They both seem to crash the PC @ 70~ percent scan completion with the core clock @ about 2k+ MHz. Stock is Core 1800MHZ/Mem 9501MHZ. Drivers are NVIDIA 497.29. BIOS is latest from EVGA.
 
This is a new card - just received from EVGA.
 
Power Supply is an EVGA SuperNova 850W
 
Previous card - EVGA FTW 1070 - Passed Both OC Scanners just fine.
 
Ill be tinkering around. Maybe i'll find the cause and a solution. /shrug
 
:Marked for Ref.

I had a random restart on my pc with a 3080 that was driving me crazy.My psu is a Corsair 1000w that was great even when running my last gpu was a 3070.Reflashed the bios on my motherboard with the latest version and so far so good.

I have an EVGA 850 GA and tested a couple different 3080's.  
 
Issue:  PC was shutting down under certain loads with both cards, different games, recording or not recording
 
Troubleshooting:

1. I throttled down the power and voltage.  It worked but not what I bought it for.  Had to use around 65%, if I remember correctly.  That seemed way too much to be necessary.
2. I thought it might've been a problem with the power supply.  However, I have an AMD 5950x.  AMD CPUs use less power than Intel's.  I also don't do any crazy overclocks.  I also only have 2 NVME SSDs that use a lot less power than HDDs, for example.  Disconnected my blu-ray drive just in case.  Ran my 3x180mm case fans on low.  I do have a dual-fan 140mm CPU cooler, though, and a rear exhaust fan.
3. Was leaning on either the video card having memory problems more than power supply issues.

 
What fixed it? 
 
Jayz2Cents thought on the problem (he sees this a lot)
 
1) Turned off Fast Boot in BIOS. 

• Fast Boot keeps a record of your current hardware, including GPU BIOS, timings, etc.  Turning that off clears that.
• My previous card in this system was a 1060 3gb.  Was loading that hardware info and limiting the card, most likely.

 
2) Ran DDU from Safe Mode. 

• Too many driver installs without cleaning can cause issues.
• Pretty sure the Fast Boot solved it, but with Windows 11 I didn't want to take chances.  Updates usually fix issues.
• NOTE:  I already disabled MSI Afterburner custom settings before.

 
3) Reinstalled the latest Nvidia driver fresh, including latest Geforce Experience.

• Using a fresh download and latest version ensures I'm not repeating the same mistake if the previous driver was corrupted somehow.
• Power outages, bluescreen, hardware shutdowns, etc, can corrupt drivers, Windows, or anything else that's loaded into memory.  Error-correcting in hardware and software can correct this, but hard to do that when a PC shuts down too fast.

 
Summary:

1. The problem completely went away.  I'm guessing from Fast Boot being disabled.
2. I can play at 4k and use Geforce Experience to record my gameplay with no issues anymore. 
3. I don't have to throttle down the power and voltage anymore.
4. I was even able to re-add the blu-ray drive, and additional case fans, no problem.
5. Saved me some cash, too. =)

So I am a bit confused. Everyone is saying that it is likely the psu with a problem...but they are also saying if it was the PSU’s over current protection, then I would HAVE to switch the flip in the back. I don’t have to flip switch. Are you all sure ocp will FORCE you to flip switch, and that’s not just some brands ways of handling it? 

WraithDecay
So. Not too pleased with this new card to say the least. Running stock speeds. Fire up TimeSpy...runs for 10-15 sec......computer turns off and restarts. ANY game I run does the exact same thing....Latest drivers 456.71. Switch on the card is set for Normal. Tried setting a custom VR curve in Precision X1 (1.1.0.2) to under 2000 MHz, cause i saw that it will crash is it goes over that. Curve does not take, and fails every time. This never happened with my 2070 Super.
 
Thoughts on what this might be? Is there a log file a can run to find out whats causing this? I have no problem returning this card if I cant find out whats wrong.
 
 

 
Get an RMA.. your going to end up with a refurb but it might not have issues...

Just FYI.
I just ended buying a BeQuiet 1200W PSU. Not a single issue since then.
750W was definitively not enough for my combination of hardware.
The 750W ended failing again. So I just sold it.
 

replace psu with at least 850w...I would go 1000w...done deal.
If your 9900k is oc's all cores 5 Ghz that alone is 250w or so....

rjbarker
replace psu with at least 850w...I would go 1000w...done deal.
If your 9900k is oc's all cores 5 Ghz that alone is 250w or so....

Higher end Alder Lake also consumes almost 250W during boosting.
So Id say these also require above 850W PSU to function correctly.

This happened to me but with a  EVGA XC Gaming 3060TI upgrade from EVGA XC Gaming 1660ti + 9900k CPU. I was using a 9 year old (I think) EVGA NEX 650G 650 PSU and most games started and ran fine but withcer 3 would reboot the PC on first load in and trying to run 3d mark fire strike would crash reboot PC after loading combined test. Thanks to this thread and a few others I went ahead and upgraded my PSU to a new EVGA Supernova 850 G6 and now witcher 3 and 3dmark launches and runs perfectly. The odd thing is when I ran Prime95 + Furmark and pushed both CPU and GPU 100% the PC didnt shut down. Im guessing the GPU may have spiked voltages when launching witcher and combined test in 3dmark which triggered the shut down?
 
My 9900k + 3060ti was pushing 400W total when doing stress testing.
I do have 3 SSDs, 3 Fans, CD ROM and USB perifs which may have pushed the poor old PSU over the top.

3080 ti ftw3 (OC to 108% Powertarget leading to 430W powerdraw per HWinfo64) with seasonic focus 750W. crashes during gaming, crashes on desktop, BSODs, rebooting, complete shut offs. whole spectrum.
 
installed a beQuiet Dark Power Pro 1200W. same crashes..
placed the OC switch of the FTW3 to STD instead of OC. no crashes any more
 
i dont think this is a PSU related thing..