I have a 177watt peltier, a power supply to fully power it, and a 145watt heatsink that i will be putting a twice as powerful fan on, the heatsink also has heatpipes is a Phenom 2.5ghz heatsink. Now i was wondering if and how i could put this peltier on my asus radeon hd 4870 video card, so i can greatly overclock this, i already know very well about waterproofing and sealing peltiers, i'm just not sure on how to attach this heatsink on here?