I forgot a very important consideration when building a dual athlon water cooled rig, The weight of the water blocks... You mentioned that you wanted to purchase Maze 2's for the system. Although the Maze is an exceptional preforming water block, it's also all copper. This makes is fairly heavy. Once you place TWO of these on a single board, and fill them with water you have A TON of lateral pressure on the board. (You could go with a desktop setup instead of a tower.. I considered it) To lighten the load I went with Swiftech MCW462 water blocks. They have a bottom copper plate and an Aluminum top. They weight much less then the Maze2. I might also suggest a polyblock, copper or silver bottom, depending on the budget. I didn't know these existed when I bought my stuff.
NOTE: both the Maze2 and the swiftech blocks mount with four bolts through the board.
My pump is a Eheim 1250, more then enough for this setup, and super quiet and reliable to boot.
Picture of top radiator setup.. and a sad Lian-Li that's very lonely... but not for long.
