ClubOC has a look at the AeroCool AeroEngine II, a case with turbine enhanced cooling.  If you aren’t getting the cooling you need, and don’t want to get your feet wet with liquid cooling, this might be the solution.
“For those who think they need something close to a jet engine to force enough air through their case to keep their cool, but don’t want their machine to look like Frankenstein’s monster in the process, AeroCool presents the AeroEngine II.”

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