I always find a game that defeats my prime stability. Its usually the most unexpected one too. I didnt know about RA3, but Dirt 3 benchmark caused a lockup for me after 18 hours of prime. Damn thing only runs for 3 or 4 mins.

Prime is still the ultimate for overall stability. I would imagine you could run RA3 with your vcore or vtt or something too low, its just particularly hard on memory (probably due to bad programming lol), thats what I found with Dirt 3.

I just add stuff like that to my list of final tests.