AC_Hacker- Thank you for making this thread, it has taken me a few nights to read it all and that is with skimming over some of the longer posts.
I do want to point out one thing you may have misconstrued about the cascaded chillers on XtremesSystems. While a lot of people overclock their systems to improve the performance of their machines for gaming, the cascaded chillers are primarily used by people who overclock their machines for the overclocking aspect alone. Usually the world records are set by people who use LN2 (liquid nitrogen) based cooling, but the cascaded chillers do have benefits for CPUs and video cards who may not work correctly at such low temperatures. The refrigerant based systems also have the benefit of not requiring the tester to constantly fill the coolers with LN2. Really all they are doing is tweaking and modding and testing their machines to see how fast they can go. Its like drag racing for people with computers.
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