XFX GeForce 8800 GTX Extreme 768MB PCI-E
MSI NX8800GTX OC Liquid 768MB PCI-E
ASUS EN8800GTS 320MB PCI-E

Now about the cooling systems.

XFX GeForce 8800 GTX Extreme 768MB PCI-E ASUS EN8800GTS 320MB PCI-E
All these cards actually use the same cooler (the 8800 GTX has a longer heatsink). With the launch of the 8800 series we roll back to the old turbine design with a fan at one end of a closed heatsink that drives the air through. This solution has a number of advantages. Firstly, the device drives ALL hot air out of a PC case. Secondly, the turbine is very large and slow, so it's quiet even under heavy load. Thirdly, efficiency of the cooling system is reinforced by heat pipes at the sides of the heatsink. The cooler is not heavy, as copper is used only for the plate that touches the GPU. Other components are made of aluminum alloy. The design resembles devices from Arctic Cooling. We found out that the cooling system worked very efficiently in all cases and did not allow the core temperature to rise above 85°C. But on the whole, both 8800 cards get very hot during operation, their PCBs may even burn your fingers. So you'd better install a good ventilation system inside your PC case.
MSI NX8800GTX OC Liquid 768MB PCI-E
This videocard actually differs from the other cards and MSI 8800 GTX models only in its unique cooling system. You can see on the photos that the device, which uses water as coolant, consists of a water block installed on a GPU (it also cools the heatsink that covers memory chips and NVIO); a pump mounted on the card and powered from it; an expansion vessel and connecting pipes. We have practically no gripes with the noise. A large fan on the expansion vessel is slow and generates minimum noise. Pump noise blends with the general noise of your system unit (it does not rise above the background noise).

Prices:

• XFX GeForce 8800 GTX Extreme 768MB: check
• MSI NX8800GTX OC Liquid 768MB: check
• ASUS EN8800GTS 320MB: check