If you get a waterblock for your video card, get one from EK Waterblocks. Simply the best. With the stock cooler and fan on high my 8800GT ran 50-70C depending on what I was doing. With the waterblock I see 41C load temps and 30C idle temps. Worth it. I even have duals and both are liquid cooled at that temp. Also cooling a heavily oc'd Q6600.
And only a single pass radiator? I'm running two dual pass right now (each with dual 120MM fans on them).
Though, internal reservoirs and radiators are the best. Makes the PC much cleaner looking. Good job overall. You're learning, obviously.
