gpu cooler
The cooljag 1u all copper? Not sure where to buy it... SilversinkSam is always popping into threads and posting the link. Maybe he'll pop into this one... You'll find the link with a search. It'd attach with thermal adhesive, or maybe you could drill holes to bolt it down. Check the dimensions before you buy... it might be too big to fit without bumping into other components.
Or the Slorb.... $5 for a pure silver coin + 2 hours of lapping it smooth on one side and the outer edge. Some tinkering and deconstructing of my old Blorb... gpu temps drop 5C and gpu core OC's +31 MHz over regular Blorb. I've run the gpu even higher, but at 286 Mhz 3dmark tops out. Attached with AS2 and 2 drops of crazyglue. SilversinkSam's got the dope on silver orbs too, he invented them.