I can't seem to find a topic that exactly matches my problem, so here goes. I just built a new computer, with a E8400, and a DFI lanparty X48 mobo. I am using a stock cooler, and am getting idle temps of about 35 degrees, which I find very acceptable. However, after just a minute of orthos, or prime95, these temps skyrocket to upwards of 75 degrees!!!. Is this normal for a stock cooler, using Arctic Silver 5??? Also, I am using speedfan to measure temps, and this processor is at factory clock speeds - 3.0 Ghz.