It's odd. My ambient is around 22C, my loop is lean with no 90's or 45's, I just flushed my rad, cleaned everything meticulously, and my 4.2ghz HT on load using blend is cresting at +80C. You think it could be the Zerotherm TIM that I used? It worked great on my E8600 @ 4.9ghz 1.56v but now I'm skeptical. It seems the only thing that I can pinpoint as the weak link.