New system. Just getting things together and testing hardware at this point. No overclocking yet. No software installed. HDD's not even formatted. CPU: i7-930; Gigabyte GA-X58A-UD5 board; Noctua NH-U12P SE2 120mm SSO CPU Cooler. On my old system (Q6600 quad 2.4 GHz with a Zalman 9500 cooler) The CPU rarely gets over 30C with the fan running at about 1800RPM. I mostly write software and rarely play any games (and those tend to be older adventure games anyway like Riven, Monkey Island, etc). Even with Prime95 running 1/2 hour or so it didn't get much above 45C. The fans on the Noctua run pretty slow by comparison. 1300RPM max I think without the slow-down adapters (which I don't know why you'd ever use because even at max speed these fans are incredibly quiet). Anyway, just running for a few minutes in the BIOS the CPU temp is 35C. That seems high to me but maybe it's not. I'm just used to a very cold CPU. I've never had trouble mounting coolers before and this time was no exception. In fact mounting the Noctua was a pleasure compared to the Zalman. So I'm confident that's not the problem but it is possible. I was way more careful about spreading thermal compound (used what came with the cooler) than I've ever been before.