The AMD64 processor never overheated because I have heatpipe w/ impeller fan in it. It stays 28c stable for very long time till the system went kaput (AV8 have Cool n Quiet turned on).. The only thing I know is BIOS problem. Because last December, winter time in my area, My cat was rubbing beside the opened case (She is always all over me while I'm working on Ubuntu). She zapped the 80 pin IDE cable and when I planned to click around, It won't do anything when I clicked. I realized my system was frozen.. I rebooted and Hdd was not reconized. It came to my mind that I FORGOTTEN to cover the case. It was too late. I was lucky enuf to reset BIOS and it finally work okay but last a week after 24/7 operation. I had to reset bios once a week. Then I stopped using my system for a while until my son begged for good graphic card for "Pirate of the Carribean" online game. SO I took it out and lent him graphic card to Gigabyte sytem. Then I use crappy graphic card for a while till my daughter booted up the AV8 system and it showed funny garbled screen. That's when I spotted it left running and I shut it down and planned to fix it later. Yesterday, It won't boot up on montior even I had best graphic card in and swapped memory stick from defunct Gigabyte GA7VAX.
So My guess the processor is okay but NEVER know that BIOS can screw the processor. Better safe than sorry that I would have processor tested before I buy another board. I saw on Ebay, Used MSI 939 mobo w/ PCI-E for $5 starting bid. It's a good board the seller said. I haven't bidded it yet so I'll wait later, I would like to try Asus 939 board.
If I had plenty of money, I would jump in Intel bandwagon and buy Quad core system LOL
Catty