I'm considering going water cooling for my next system. My three biggest concerns with this is that 1. I don't really know what's what for components. 2. Leaks? 3. WC for my system would be $400 or more, whereas air cooling would be $150 or less. I would be wanting to cool my CPU, both GPUs, and possibly the chipset. For the radiator I was thinking of either this one or this one. My concern is that the second one wouldn't be enough for an OCd CPU and two GPUs, which is why I was looking at the thicker one. But would the thicker one even be enough? For a pump I just figured this one. I've been looking around and it seems to be pretty common. For a CPU block I thought this one looked pretty good, but I really don't know. I'll be getting a Q9450 when they come out in January/February. For a reservoir would this be sufficient? Tubing probably like 8ft of this? I did not list GPU blocks because I plan on getting two 9xxx GTX cards fron nvidia when they come out in February, and I doubt they have water blocks for that yet. As far as a chipset cooler goes (if I get one) I'll probably be waiting for a socket 775 780i equipped DFI LanParty UT board.