Hi, I recently bought an XFX DD 7970 GHz edition last month few days before Christmas to replace my old Powercolor 5970.
When I was benchmarking Arkham City, about 10 seconds in my PC shuts off for a few seconds and reboots. I did it again to see if it does it again and it did. Now, another thing is that I left my PC idle for 20 minutes and does it again. Pulled it out and put my 5970 back in. No problems after that. I RMA the card back and got my replacement today. No problems running my games till Sleeping Dogs benchmark. Same thing happens. Watched the temps and they sit at 69C - 72C with 1050/1500 default. The second card does this only when under load in Sleeping Dogs. Arkham City ran fine. Haven't tried other games yet.
Would like to know what I should do next.
Here are my specs.
ASUS Rampage III Extreme
ASUS Xonar Essence STX Sound Card
XFX DD GHz 7970 3GB
Nvidia GeForce GTX 650 1GB - PhysX Card
1200W SilverStone PSU
Thermaltake Spedo Advance Case