I like quiet air cooling so Core i7 in its present form is not for me. Maybe when they shrink the process down to 32nm next year or bring out a Dual Core version, I'll think about it. I'm kind of spoiled by the cool and quiet performance you can get out of an E8400.

xarot: Sounds like you've got a stuck sensor. Intel says these sensors are not designed to be accurate at lower temperatures and will become saturated as the CPU temperature drops. That's a fancy way to say that some of them stick and stop moving as the CPU cools down. They were designed to trigger thermal throttling and thermal shut down and even sticking sensors don't seem to have a problem with that when the CPU temperature goes higher.

Post a screen shot of the CPU Cool Down Test. It's an excellent tool for spotting stuck sensors and should show you exactly what's going on.