HIS Radeon HD 9650, are the temps causing my random shutdowns

Here's my setup:
ASUS P8Z68-V PRO LGA 1155 Intel Z68
Western Digital VelociRaptor WD6000HLHX 600GB
CORSAIR Professional Series HX750 (CMPSU-750HX) 750W ATX12V 2.3
G.SKILL Ripjaws X Series 16GB
Intel Core i5-2500K Sandy Bridge 3.3GHz (not overclocked)
HIS Radeon HD 6950 IceQ X Turbo 2GB (256bit) GDDR5

I've been having issues with the comptuer restarting my system while gaming (and once just on the desktop) and I've done the following to find out the root cause.

I've run mem-test, two passes with no errors
Iv'e run fur-mark, on the heaviest settings, the results are attached (temps seem very high)
I've updated the bios
Run CPU Stress tests (RealTemp with Prime95, IntelBurnTest), all pass with good tempuratures.


One thing I've notice is after updating the bios when it restarted it immediately restarted before getting to the bios screen twice. I turned it off completely and it started up fine after that. I also noticed this happened when I set the "performance" setting in the basic bios.

I am at my whits end but I think I'm closer. You think it's the GPU?



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