The CPU is good up to 1.456v, as long as you have decent temps and not pushing 70-80C. So check for dust as Psi says.
Don't laugh, I still have a Core 2 Duo E4300
Recently, I've had some instability, not sure too why. Ran Prime 95 version 26, and I noticed CPU 1 (core 1) failed after a few minutes with a "Rounding error. 0.5 expected 0.6..". CPU 2 (core 2?)
hahaha ... yes, a comment review from someone did express concern about that possibility. Of course that immediately drew me closer to the purchase. But cleaning out these d@mn heatsinks & radiators does require verve considering the PITA it is to get them out. I am hoping to avoid the yearly (waaay to often for me) extraction & disassembly of a system *just* to clean. I always feel that I ought to be putting that energy into building a new system.Wow, a 500 W duster. It will blow the chips right off their socks