Originally posted by: KoolDrew
V-1 Ultra - $12.95 + S/H
Have it on my 7900GS right now voltmodded to 1.507v Core and 2.18v mem, and it cools well. Definitely a great cooler for the small price of $12.95. With only one fan load temp was 75C, but that's with 1.55v. At stock volts, it didn't really budge past 52C load for me, and that's after 30-45 minutes of ATITool's 3D viewer.
Considering it's so cheap and you should definitely see a large improvement over what you have now, that would be my recommendation. I admit installation was a complete PITA though.