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Computer in an aquarium - liquid oil cooling
This "computer-in-tank" used for cooling the mineral oil. According to the author, this is a very effective way of cooling, which gives the best results, which confirms the done a number of tests. Well, the mineral oil itself (and not, for example, vegetable) was chosen because, firstly, it is crystal clear, and, secondly, never deteriorates. The only problem - the mineral oil in large quantities is hard enough to get it, at least so say the authors of the project.
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Seven
and last
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More
Three
Four
Five
Six
Seven
and last
Source: