So I have had my x3370 for a few weeks now. When I first installed it, I applied Arctic Silver 5 and right away was able to overclock it to 4.0GHz@1.37v, and temps under 100% load from OCCT stayed in the 60-62°C range. At stock email@example.com load temps were in the 50°C range. I've been running the CPU with F@H SMP on and off since I installed it. Over the past week my machine has been frozen when I got home from work. Well today I decided to track down the reason. First thing I fired up was OCCT, and right away I noticed my idle temps at 4.0GHz were at 50°C. Well I thought, that isn't normal. So I start an OCCT run, and not even 5 minutes in the temps were up to 70°C and rising, and then the test crashed(not that I would have let it run much longer anyway). So the only thing I can think of is that the old Arctic Silver 5, which is currently about 5+ years old, dried up super quickly instead of burning in like it is supposed to. Unfortunately, I do not have any other thermal paste right now, so I am waiting for my MX-2 to come in, and I'll be applying that this week. Hopefully, that will fix my problem.