] Take it up a notch without losing your cool. The
] top-of-the-line Power Mac G5 with dual 2.5GHz processors
] squeezes outrageous performance into tight quarters. To
] cool down those steaming circuits, Apple designed a
] sophisticated liquid cooling system that takes off the
] heat without bumping up the noise. Mac OS X dynamically
] adjusts the flow of the fluid and the speed of the fans
] based on temperature.

Is this the first "off the shelf" PC to ship with liquid cooling?

Apple's New Dual G5 is Liquid Cooled