If I remember correctly this was:
SuperMicro Full Tower
Gigabyte EP45-UD3P Motherboard
E8400 Overclocked to 4 GHz
2x 2GB Corsair XMS 800 MHz DDR2
Radeon X300SE
Apogee GT waterblock
MCP 655 pump
77 Bonneville heatercore
Homemade PVC reservoir tank
No fans are directly on the heatercore, but all case fans are blowing out (exhaust) to create negative pressure. The side vents, and empty drive bays were closed off, thus, forcing all intake through the radiator.