HSF over here
Duron 800 @ 1050 with Global Win FOP-32 (140 x 7.5)
Abit KT7A-Raid Mobo
512 mb (Crucial Stuff CAS 2)
Hard Drive Cooler
Elsa Eraser X2 Gforce with Blue Orb (modified to display as a Quadro and overclocked http://www.tweakhardware.com/guide/quadro/ )
Sound Blaster Live Value
Full Tower with 5 (120 mm) case fans with seperate PSU
I use both air and water. My main system is water cooled 1.2 TBird using a Swiftech MCW462, my toy is a sub 0 chilled water 1.3 Tbird with a Maze2 block.
The server BP6 w/dual 366 @ 572 with 2 Alpha pal 6035 As of now this thing hasn't even been rebooted in over 6 months! At one time it almost made a year befor it crashed with Red Hat 6 try that with MS crap.
Portable gaming system uses a hedgehog to keep a 1.2 bird in the upper 30's under full load.
Then there is the G4 mac.....funny how this thing runs only a little over room temp with just a heatsink, no fan!