Here are my current Crunchers:

SR-2 Two Xeon 5680's @ 4.3 @ 1.3875
ATI 5770 stock
650w

i7 920 @ 4.2 @ 1.325
ATI 5850
310w

i7 920 @ 4.5 @ 1.3875
ATI 5870
335w

Q9550 @ 4.0 @ 1.40
Nvidia 8800GTX
405w

Dedicated AC unit for the room
1400w