The computer that this CPU was the heart of stopped POSTing, and I couldn't determine if it was the CPU or the motherboard that caused the problem. I sent the mobo back to Asus and they supposedly found no problems with it, but when their support returned it there were some damaged pins in the socket that I hadn't noticed before (might have been there or they might have caused the damage). I don't have another LGA775 motherboard to test the CPU with. I'll fire up the computer this weekend and see if I can say for sure that the CPU is good.