Previously the domain of adventurous overclockers, Hardcore Computer is now selling the "Reactor", a PC case filled with mineral oil in which videocards are submerged. Because oil absorbs heat better than air, the videocards can be overclocked far beyond what would otherwise be safe operating temperatures.
The price will vary depending on configuration, but a mid-range machine with dual GeForce GTX 260s will cost around five grand. Not cheap by any stretch of the imagination, but not completely ridiculous considering the outre nature of the case, either.
Reactor product page [HardcoreComputer.com]
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