I run a Thermaltake 650w Toughpower and it is a Solid PSU and i will be using it when i build my Yorkfield Quad-Core in Feb-Mar next year.

Now if i can figure what mobo to buy for my G.Skill PC2-8000 2x2gb = 4GB dual channel kit, i will be all set to go and wait untill the Yorkfield QX9450 arrives.