HomeTutorialShould a power supply be on the top or the bottom of a computer case?

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Should a power supply be on the top or the bottom of a computer case? — 3 Comments

  1. I’ve only come 1 bottom mounted PSU – it was completely clogged up with dust bunnies and rubbish and had failed (probably overheated). There was zero sign that the filter or case had ever been cleaned or blown out…

    My advice – stick with top mounting. Other solutions for heat removal are less risky and more effective than a bottom mounted PSU.

  2. Err… Bottom mounted power supplies usually draw air in from BELOW. Dust inside the case will have no effect on them.

  3. Hi bono,

    Remember that most computer owners don’t know much about computers, and wouldn’t think twice about placing the tower on a carpeted floor… Then the bottom mounted Psu will suck zero air through… With dire overheating problems