I got a stock clocked e8400 and seated a XIGMATEK HDT-SD964 on it. But It was REALLY REALLY hard to seat and I almost broke mobo to seat this, not kidding.. This heatsink got some height problems and with really high force, i finally seated it..
cpu temp (idle) is around 27-33 degrees but core temps are around 47-50, i have seen 63 degrees max on games. I know it is really high even it is stock. It is a c0 revision, known with heat problems (?). I want to ask you "why". Is it because of revision or heatsink or thermal paste or what ?
I don't see anything to be concerned about. The Tcase for this processor is 72.4c while this isn't the best temperature to judge by it does give you a solid idea on temperatures that you should try to stay below under load.