Summary: Water cooling works, but you need to be somewhat proficient at building and modding PCs. This was my first attempt, and it works well. But I'm an old tool maker, and I've built about 15-20 PCs before.
Pros: Seems well thought out/designed. This fits my Asus 4870 well even with the ram heatsinks on. 3/8 I.D. tubing from a Thermaltake kit. GPU temp has gone from 72C to around 50C while playing Crysis.
Cons: Wish it was copper. But the whole dissimilar metals thing doesn't hold up because all the radiators are aluminum. Copper just transfer heat faster/better.
Summary: I will mod Corsair to fit inside the case. Will replace reservoir (tiny) and radiator (cheap aluminum).
Pros: I first installed on X1950Pro. Now running on 8800GT BIOS volt modded to 1.1v and OCed to 740MHz core. Load temps are 53C (AtiTool 45min) on GPU Core and 41C idle. Hooked to Corsair Nautilus 500 external kit. I also have Delphi CPU and Zalman NB WB in the same loop with 3/8" tubing.
Summary: Well designed...and ZALMAN means a quality product.
Pros: (XXX EDITION)GeForce 8600GT's in SLI config...with preoverclocked cores at 620/800 and I over clocked that to 690/860. EVEREST measures GPU1 at 50DEGREES C- and GPU2 at 48DEGREES C- and since this is all in a passive cooling system I also have my CPU cooled on the same line and it's an AMD x2Opte...
Cons: They do take up some space...sticking out just a bit prevents me from being able to useing 2 of my PCI slots.
Pros: Running GeForce 8800 GTS's in SLI configuration...currently, One is liquid cooled with Zalman's Reserator 1 Plus (WHICH uses this exact W.Block) and the other is on a stock fan...and the difference is approx. 10 Degrees...that's why I just ordered onther one for the other Card. Plus its an easy s...
Summary: It must be something else that needs to be cooled that this kit doesnt come with. I'm baffled.
Pros: Looks cool ? Keeps core cool.
Cons: I hooked this up to my x1900 XTX and my games are crashing now and I'm getting a heat warning from my catylyst control. I have all eight heatsinks on all 8 memory chips, just like the stock cooler had. I have the vga water block on the card exactly how they showed it to be and am getting 60c temp...