Refrigeration PC Cooling System

Utilize micro compressor and refrigerant to cool PC, to maximize over-clocking limitation and performance. - 20ºC cooler than liquid cooling System - Equipped with intelligent IC controller to prevent condensation - Thermal resistance can be <0.02 ºC/W under 100% loading. - High performance micro compressor uses standard 12V power - Small, low noise, high performance technology.
Thermaltake Xpressar - World's First DC Inverter Type Micro Refrigeration Cooling System
Thermaltake RCS100 - The World's first DC Inverter Type Micro-Refrigeration Cooling System
Thermaltakereview > ke Xpressar RCS100‬‏ - YouTube
At the heart of the Sub-Zero LCS are thermo-electric modules that are able to chill fluid pumped to the CPU below 0°C. Thermo-electric cooling uses electrical current to create a temperature difference inside a thermo-electric plate. Digital Storm exploits this characteristic to chill liquid to below sub-zero temperatures increasing overclocking overhead and prolonging the life of overclocked components.
Digital Storm Liquid Chilled TEC
Long, long ago (2005)....
I first heard of Asetek a couple of years back at an Abit press briefing. There were two guys there from Denmark showing of a new product which could cool down a CPU to -12 degrees Celsius, which at the time was pretty amazing. Things have moved on since then and the latest iteration of the VapoChill system from Asetek is more powerful than ever.
Asetek VapoChill XE II - Refrigerated PC Case Peripheral review - Trusted Reviews
It seems Asetek has since (for some reason) moved on to water cooling systems (without the pressure)

Efficiency is a big question for the future. All the noise from the compressor is nice but when is it really worth the power consumption? I would much rather have a cluster than a 6000 euro pc case. Something funny I noticed reading around a bit is that it is important to keep the cold (below room temperature) inside the case. Any loss of cool will eventually start cooling the room rather than the processor. We seem to have many years worth of research into combined heat/sound insulation. There must be something we can use. It must be insulated so that no coolness is lost at maximum performance which most likely means it will have less ambient cooling in some areas under normal loads.

If you just want a good cooling system without spending the big money: Here is some text that reads like the author knows what he is talking about.