Ok, so this is my first time watercooling and I have some questions about what I'm doing. I wanna w/c my P4HT 3.4ghz and my new 7800GT 256mb. I was thinking of going with the swiftech apogee for the processor and the dangerden NV-78 for my GPU with 1/2in tubing. My only concern is the size radiator, I wanted to know if I could get away with using a Black Ice Extreme single 120mm and still be able to cool the two cores. I'm not going to over clock, I just want a quiet system that wont over heat. My last two graphics cards ended up overheating and spitting sparks out the side of my case. If anyone can help out that would be great.