Here's my third atempt at water cooling. Case is an Antec 830 equal (20.5 " tall) that I painted with Auto Enamel. Chevette heater core, Maze 3 all copper, a NB Block as well and 1/2" Clearflex tubing.
Temps at 80F ambient are 35c light loads 43c under very heavy load 3dmarks looping for example. (Vcore is @ 2.0) Running a 2100 219 x 10.5 on a NF7 2.0.
There is a 120 mm Enermax adjustable fan on the core (at lowest possible RPM setting) two 80 mm fans (NMB MDL#3110) blowing down through the base of the case. (At 12V) I have a 7/12 switch to adjust the two 80's so I can lessen the noise come winter (not that it is loud @12v).
In front of the HD cage is a L1A Panaflo and (2) L1A's blowing out back. This rig is nice and quiet and my first water cool that consumes
NO FLUID! This time around I switched from Tygon to Clearflex 60 and used a Hydor L30 instead of an Eheim 1250. No other significant changes so either Tygon leaks or absorbs fluid or Eheims leak very slowly. Or both? I find the Hydor L30 a much nicer pump to work with, the smaller size is a great benefit and it is as quiet as need be.
Jim