It is my understanding some mainframe computers used to be water cooled. 

Just got this from dell.

The Dell XPS 710 H2C Edition has an innovative, two-stage cooling solution that helps cool the processor even at its highest mode, and does so more effectively than Dell’s air-cooling solution. The H2C hybrid cooling system combines a liquid radiator, a thermoelectric cooling module and control circuitry to optimize CPU cooling with minimal power. Ideal for gaming enthusiasts, the system is designed to help the XPS 710 H2C Edition stay cool in overclocked mode2—up to 9 degrees cooler even when you clock it at bin+2 speeds.3

TinyUrl.com

Check out the price : is a "cool" $5,499.

Keith
 

Keith Smith 
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