Hi there. I am looking in to watercooling my pair of BFG 7800gt's as i am fed up with getting cooked in front of my pc. The damn noisy things were pushing hot air against my front 120mm intake fan and cooking my hard drives, so i had to reverse the front fan to suck air out and so it blows straight at me. Anyway i have been thinking about it for a while now and have been looking around to see whats what. I have an ordinary sli board so the gap between the two cards is about 2 inches if that. Has anybody got a watercooled 7800 setup at all? If so how have you got it rigged up (have you got the outlet from one card straight into the inlet of the other so that the second card presumeably runs warmer or, have a Y piece and created two loops that join back together after the gfx cards) and what components do you use? Waterblocks wise i have been looking at the following:- Alphacool Nexxxos WAK GFX NVXP-3 6800/7800 vga blocks, Koolance VID-NV2-L06 6800/7800 vga block, Swiftech MCW-55 vga block, DangerDen NV78 7800 GPU SLI KIT Rev 1 - for 256Mb Cards (1/2") Apart from the Swiftech and Dangerden blocks the others seem to be only 1/4" pipes which seems quite restrictive to me. That Dangerden kit is expensive too, £135.04 just for the two blocks and the fittings. The Koolance got a good review over on systemcooling.com and it cools the memory as well. I have been assured it now fits the 7800 series too. Any other good blocks i have missed? I really wanted to use 1/2" tubing for max flow. For the pump i was thinking of the Eheim 1250 1200 l/ph mainly as i keep fish and use Eheim products i know how reliable they are, but am open to suggestions. I want a triple 120mm rad and came up with these:- Thermochill PA120.3 Alpacool Nexxxos Pro lll triple rad, Alphacool Nexxxos Xtreme lll triple rad, Waterchill RDT02 triple Black Ice Pro lll. All this will be in a box bolted to the underside of my desk with only the tubing to and from the blocks (and the blocks of course) inside the case. Is it worth paying the extra for Tygon tubing or will the normal stuff do just as well. Only the gfx cards will be cooled by water as i am more than happy with my SI-120 on my cpu. As for routing i was thinking of putting a Y piece before the gfx cards and splitting the feed between the two cards so they will both recieve water already cooled and then joining them back into one with another Y piece on the return side of the card before the radiator. Or does it not make a lot of difference with one card having the first cards warm water going through it? I was thinking of two seperate loops at one point. Sorry if this is long and drawn out but i want to get this right first time. Many thanks in advance for any advice.