Is my GPU getting enough power?

[TheMightyMat]

Hello,
My GPU is an Nvidia Geforce GTX 770 (not overclocked, except from a more agressive fan curve) and I have a 750W power supply.

The highest temp I get on my GPU when playing graphically intensive games are about 70C.

Recently my computer restarted by itself while playing Rainbow Six: Siege. This is the second time in the last 2 months that this has happened (the other time was playing battlefield). I have read online that this can be caused by the GPU not having enough power, but 750W is supposed to be 150W more than this video card needs?

The only other possible cause I can think of is that it may be bugs in the games, as both occasions occurred when joining/leaving/starting/finishing a match.

Does anyone know what may be causing this, and if it is an issue that I need to worry about? The computer is about 1 year old, so I wouldn't have thought that any components have worn out yet.

Thanks for any help.

[BoNfiRe]

Looks to me like just a game crash, it may be more than is needed, but will only take as much as needed. :)

[TheMightyMat]

Originally posted by DaddyBeee:

Looks to me like just a game crash, it may be more than is needed, but will only take as much as needed. :)

Ok, just suprising that a game bug can cause a computer restart.

[BoNfiRe]

The PSU could be failing, but as it's only a year old, I doubt that. What version of Windows are you using?

[TheMightyMat]

Originally posted by DaddyBeee:

The PSU could be failing, but as it's only a year old, I doubt that. What version of Windows are you using?

Windows 10 64 bit

[initiaLiSeD]

Stress test the PSU using Furmark and Prime95 at the same time, monitor temperatures and voltages with HWMonitor.

A CPU-Z validation link can help diagnose system configuration issues.
LinX can be useful for stress testing RAM and CPU overclocks - 20 loops on max RAM.

4 Hours without a crash or the 12V line dipping under 11.7V and your PSU is fine.

Furmark: http://www.ozone3d.net/benchmarks/fur/
Prime95: http://www.mersenne.org/download/
HWMon: http://www.cpuid.com/softwares/hwmonitor.html
CPU-Z: http://www.cpuid.com/softwares/cpu-z.html
LinX: http://www.xtremesystems.org/forums/showthread.php?201670-LinX-A-simple-Linpack-interface

[BoNfiRe]

Originally posted by TheMightyMat -TPF-:

Originally posted by DaddyBeee:

The PSU could be failing, but as it's only a year old, I doubt that. What version of Windows are you using?

Windows 10 64 bit

Sorry to say, there are a few known issues with Windows 10, causing crashing and system reboots. On another post, I mentioned this, as I have four different systems, two of which both crash and BSOD and were brand new, out of the box this Christmas. Two of my machines are fine though. However, the two that are fine, are both upgrades from Windows 7. The two with the "fresh installs" both crash.

[TheMightyMat]

mine is an upgrade from windows 8.1. If it is only OS issue, it doesn't matter, I just wanted to make sure my hardware wasn't broken :)

[BoNfiRe]

Well, do what initiaLiSeD mentioned, and stress test them as much as you can, keeping an eye on temps. It could possibly be a component gettiong too hot, rather than a power issue. :)

[TheMightyMat]

Originally posted by DaddyBeee:

Well, do what initiaLiSeD mentioned, and stress test them as much as you can, keeping an eye on temps. It could possibly be a component gettiong too hot, rather than a power issue. :)

It's definately not a component getting too hot, my temps are about 40-50C lower than what the manufacturer reccommends as the max temp when under load.

[BoNfiRe]

I would say more to do with Windows 10, personally. But another thing to check, would be drivers.

[rotNdude]

A computer restart can be caused by a BSOD and you won't see anything unless you change the default windows setting for automatically restarting on a fatal system error. The restart could also be due to the power supply not being adequate or the incoming electrical power having a sudden voltage drop. If it has only happened a couple of times in the last months, I would lean towards the electrical power to your residence.