Well I finally bit the bullet and upgraded the mobo & ram on the ol Jesusbox. Popped in an Asus M5A97 R2.0 and 16GB of Corsair DDR3 whatever memory.
Didn't need to reinstall Win7, so that was a plus. Also, extra SATA ports on the new mobo means I got rid of a SATA controller, wee!
Turns out my high CPU temps were due to a clogged rad on my CPU (doah guess I should check that out every so often. Went from 50C to 30C.
Got a bunch of random DDR2 sticks if anyone wants some memory
WTB wireless SATA, heh.