GTX 670 power issues

peeptheflix · May 10, 2013

I recently got myself an EVGA GTX 670 FTW after my XFX HD 5850 died.

It performs well most of the time, but whenever I play games (from little flash games to maxed out Dota 2), I get intermittent power drops to my GPU, causing a ~1 second display freezing spike. I figured it was power by monitoring the GPU under load with EVGA Precision X:

http://imgur.com/JvOGYBE

Those dips in the Power graph corresponded to my in-game spikes.

Specs:
PSU - Corsair HX750
CPU- Intel Core i7-930 Bloomfield 2.8GHz
Motherboard - ASUS P6X58D-E
Memory - Corsair XMS3 6GB (3 x 2GB)
OS - Windows 7 Home

My question is: which part of my computer is faulty?

1) The power supply is not strong enough... but it handled the HD 5850 fine, and both the HD 5850 and the GTX 670 list 500W as the minimum power.

2) The power supply is broken. It could be, I've had it for 3 years now.

3) The GPU is faulty. Somehow the GPU is just losing power even though the PSU is supplying it.

Are there better ways to test which part I need to fix or replace?

Thanks in advance.

cookybiscuit · May 10, 2013

Try maxing out the power target and voltage, its locked in the BIOS to 1.175 so don't worry about it exploding in your face.

mace200200 · May 10, 2013

I can tell you right away, you have enough power for a 670. Those HX units are quite good, after three years it could start to go bad but it really shouldn't. That graph is the core clock right? What I would do is run CPUID, play games until it starts slowing down, then check the power on your 12V rails, it should be at 12V +/- 5 or 10%. If it really is struggling, it'll be low, around 11.6V.

Could also be a bad GPU.

peeptheflix · May 12, 2013

mace200200 :

Thanks for the reply.

I ran CPUID and didn't notice anything out of the ordinary under load. However I did find an old HD 4770 laying around, so I took out the GTX 670 and installed that. Lo and behold, the issue persists (it happens way less often though).

I've concluded that my power supply is faulty and I've ordered a replacement.

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GTX 670 power issues

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