I already have a Prolimatech MK-13. That cooler has a VRM heatsink that's compatible with the HD5870. HD6950 and HD6970 have the same PCB design so maybe the heatsink will fit on the HD6950 Then it's cooled by 4 x 120 mm fan. I also ordered a Asus GTX460 Top, just to fuck around with. I will try to post pics next week.