Re: hardware failure
it may be a LITTLE unstable, but usually 6 hrs is a good indication thats the system is pretty rock solid. some people like to run it for 8-12hrs, but ive never had any problems w/ my system after only a 4 hr orthos test.
if possible you may want to up your vcore a bit, but make sure the cpu doesnt get too hot. (an dont go above 1.5v)
i7-2500k @ 3.30
eVGA gtx 570 @ 880/1000
2x 4gb G.Skill Ripjaws DDR3-1333
Corsair 600w PSU
3DMark 11: 6595