WOW, you guys won't believe this. Before I had a Zalman CNPS-9000 CPU Copper cooler on the CPU. Now I have a Kingwin copper water block with AS5 and my cpu temps are 15 Celsius cooler. My 7800 gs is now 20 Celsius cooler. I had to make my own retention bracket, and after 3 hours of work it was worth it. All this with a Kingwin Aquacool AS-3000