Holy smokes! You pulled the trigger on the 5970! Sweeeeeeeet.

@Beer - they will run both DDR2 and DDR3, as they have both controllers built in. I was talking with some big BOINC dudes on Anandtech's forums and they said in heavily threaded apps the X6 easily keeps up with most i7 rigs for points / day.

Honestly, it probably won't be a huge upgrade points wise from that Core2 Extreme I was running, because that thing was fast - I had it O/Ced where it was close to an i7 950 in power.
Thing is, I can't get the motherboard that I want in the socket 775...so...sheesh. I get to give the state of California another $50 tax just on my horse-trading to get what I need. Ugh!