PC restarts when playing specific games after installing new graphics card

[Skilldo]

I recently purchased a Palit GTX 970 which has a very cheap looking cooler on it but seems to do a fine job on games like Battlefield 4 and Far Cry 4 at 1080p Ultra settings. However, while playing AC: Black Flag and Watch Dogs the PC has powered down and restarted with no warning after about 30 mins of play on several occasions. I assumed it was temps at first so I monitored the temp on the GPU while playing but it rarely reaches 73c. I have also ran Unigine Heaven and Valley benchmarks for an hour each on highest settings with no problems. I have no idea what to do next apart from return the card.

PC Specs:
Gigabyte Z77-HD3 Motherboard
i5-5670k
8GB x 2 Corsair Vengeance 1600
Palit GTX 970
120GB Crucial SSD
2TB Seagate Barracuda
500w Coolermaster PSU

Any help would be much appreciated!

 

[Vynavill]

Depending on the model, the CM PSU could either be good or not good, so please state that too.

In any case, did you have an AMD GPU before you got your 970? If so, did you wipe the PC clean of AMD drivers?

 

[Skilldo]

Depending on the model, the CM PSU could either be good or not good, so please state that too.

In any case, did you have an AMD GPU before you got your 970? If so, did you wipe the PC clean of AMD drivers?

I had a GTX 660TI before. Removed the old gforce drivers and installed newest ones. I'll post the PSU model when I get home.

 

[cosmo77]

If you think it is a temperature issue run http://www.gputemp.com/ and you can log the temps to find opput what it is peaking at.

 

[Vynavill]

73 Celsius degrees on a GPU.is hot, but shouldn't trigger the thermal shutdown signal, unless VRMs were at a MUCH higher temp...
Even so, he ran Unigine without effort, as he said, so I'm assuming GPU temps are not the issue, or at best they're very unlikely to be.

Since Unigine is running for a much lower time than half an hour, the actual component which might be overheating might very well be the PSU itself, but if it's a good quality one, either the issue is somewhere else or it's a faulty unit IMO.