I think I got it!

I completely disassembled pwroftwo all the way down to the last screw.  I set the motherboard up on my desk with just it, the CPU’s, the Video Card, RAM, and power.  Surprisingly — it didn’t cut off!  It ran smoothly for 20 minutes with my old power supply! Crazy, I know.

Anyways, I’ve built it back piece by piece trying to make sure there are no shorts anywhere, etc.

I’ve reinstalled Linux on it because one of the times it shut off it messed up the partition, so that went well, and I’m now about to try to install the RocketRaid drivers for my PCI-X card and then subsequently get my 2TB Raid Array up and running.

Actually.. before I do all that I’m going to let it run overnight  — Let’s hope it’s still running in the morning.