I'm going to use the Zalman Reserator +1 to cool my system. When using 2 graphics cards, it has been reported that Zalmans water block doesnt fit properly.
Therefore I have found an alternative block; one made by DangerDen especially for the motherboard I have (Asus A8N-SLI)
Heres a link: http://store.over-clock.com/Chipset_Blocks.html
Now, will the reserators tubing be compaitable with this block right out of the box? The block supports 1/2" and 3/8" barbs, and you can select the ones you want when purchasing.