FUD Zilla published a review of the Cooler Master Glacier 600 which is a watercooling block for the ATI Radeon HD 2900 XT graphics card.
Glacier 600 is specially designed for ATI Radeon HD 2900 XT graphics cards, and we must admit we're impressed. It looks even better when it's mounted on the graphics card, and you'll see that for yourself later on. It's made of aluminum and weighs 390 grams. It looks quite large, and it is. It’s intended for cooling the GPU, memory chips but also MOSFET transistors, so the length of 197mm shouldn’t surprise you. The height of the water cooler is 125mm, while the girth is just 13,8mm.
Check out the review over here. It seems to cool better than the stock cooling solution and it's also a lot more silent.