7970CF Issues, possible PSU problem?

[martos123]

Hi,

I've been having intermitent issues with the stability of my rig for a while now. After ~30mins of gaming, the system will just reboot. Once it's rebooted, everythings fine and will run again for 30 mins or so.

Temps are good for both the CPU and GPUs (nothiung gets above 50c. I have removed overclocks and it still happens and ULPS is off. I've also tried various drivers. I've even tried giving the GPUs a little extra juice to see if this sorts them out. Cards are fine on their own in either PCIE slot and i've tried a different CF Bridge too.

In addition to the specs in my sig, there are 4 HDDs and a BDROM drive.

My PSU is a Corsair HX850, and i'm wonderring if this could be the culprit? Whilst I know its got enough horsepower to handle my kit, there could be an issue with the 12V rail that is causing the reset after being under load for a while?

 

[LtMatt]

Likely to be a psu issue. Try a different psu. If it still does it then DSR then new psu, assuming you don't have a spare one laying around.

 

[systemerror]

How old is your PSU as if under 5 years old its still under warranty

 

[martos123]

Its a couple of years old, but still under warranty, unfortunately Corsair RMA can take a good few weeks to turn around.

 

[systemerror]

Well best option is as ltmatt advised unless you have a secondary PSU you could use bit dies a pointing if you lost 12v rail on it only after a couple years

 

[martos123]

Managed to borrow a PSU and all seems ok with it, so looks like RMA time! Only difference is the PSU i borrowed is a 1000W as opposed to my 850W one, but an 850 should be fine for my setup.