How much did the cooling system cost you?If you know you're gonna run Crossfire HD 7970s, I'd try and get my hands on the original waterblocks for them. The new CSQ blocks are fine and all, but require additional stuff to connect several cards.
---------- Post added 2012-08-26 at 09:29 PM ----------
Just so you know... sometimes you get lucky with radiators. Lol.
Terribly sorry for the flash light and shit, hard to get a picture of it otherwise.
Anyway, I'm currently running a loop in my 650D.
Koolance RP-1200 noise:
Asus Sabertooth Z77
i5 2500k w/ EK Supremacy Full Nickel
Corsair Vengeance LP 8GB 1600MHz @ 1.5v
Asus HD 7970 Direct CU II w/ EK nickel block
Corsair Force 3 240GB
Samsung Spinpoint F3 1TB
Corsair AX 850
Rad is Koolance 2x120mm w/ 11FPI.
Pump/res/etc is Koolance RP-1200.
Coolant is Mayhem's Dye Aurora Hydro Gold.
Fittings are all Monsoon 1/2" ID 3/4" OD.
Some Bitspower accessory fittings.