Ok i have an evga x58 and i'm now on my 2nd set of memory. It ran for a good 3 months at 4.2ghz, but now i cant get any sort of overclock to stick. I get a blue screen immediately upon windows trying to start. I installed a new set of memory about a week ago and it ran for around 3-4 days fine at its full overclock, and then started doing the same thing. I have run the built in vista memory check but havent gotten around to testing with memtest86 just yet. I'm just curious if anyone else has run into anything like this. The other possibility i'm wondering about is if my chip has just degraded somewhat and might need a voltage bump. Anyone else had issues with their i7 920 overclock becoming unstable after a few months.