Looks like an overheating problem to me. As far as heatsink is concerned I recommend Thermalright XP-120 (I have it myself) + some quiet 120mm PAPST fan (I have a 4412 F/2 GL).
Optionally you may consider SI-120 or some XP-90 (92mm fan) :smile:

Yeah looks like it is a heating problem, running prime95 on each core sperately and no resets.

Thanks for everyones help,

Joe

Well the new heatsink and fan came finally and now my computer is functioning properly. I went with the Thermalright Ultra 90 K8 heatsink and one 92mm Vantec Tornado fan. The Vantec Tornado sure is loud, I will have to get a rheostat to control the fan speed to get rid of some of that noise.

The Heatsink Factory at [url]www.heatsinkfactory.com[/url] offers a Zalman speed controller for your heat sink. I bought 2 XP-90C heat sinks with low speed fans from them for my Tyan dual processor motherboard. This PC is so quiet that I have to make a "special" effort to verify that it is still running.