Shopping around for a cabinet for my alternate box, I've seen cabinet/case that place the SMPS/PSU at the bottom of the case. This is surprising because I'd have assumed putting it at the bottom would affect the cooling effort within the PSU ... so my question - Why is the power supply sometimes placed at the bottom of the case?
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Actually this is primarily to address the cooling issue. The general idea is that you've got more open space around the bottom of the case, leaving the power supply more (and cooler) air to pull from inside the case. Additionally, at the bottom of the case, it won't be fighting with the processor for cool air quite so much. Some cases also allow the power supply to be installed in either the top or bottom (or both) to suit your needs (for example, a high-end rig with multiple video cards might use two power supplies). | |||||||||
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I don't see how this would improve cooling at all. You'll note the Lian-Li PC linked above still has a top exhaust vent (heat rises, remember?) and placing the PSU at the bottom just guarantees anything that falls or any dust in the system will go through the PSU. My best guess for the reason is to make cable management easier (spare cables will sit on the bottom of the case) and to help make the system less top-heavy. | |||
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