Power supply

my old power supp;y has fan in back, the new one has fan on side facing the cpu does it make a differencecan i use this one or send it back for one that blows out te back.
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  1. It usually does not matter where the fan is located in a power supply. Modern atx power supplies exhaust air out the back of a pc case. In your case warm air should be exhausted through the perforated mesh on the back of the psu.
  2. bernie, the current trend is toward side mounted fans, because you can use a larger fan. A larger fan, moving the same amount of air as a smaller fan, rotates more slowly, making it more quiet.

    As Johnny said, regardless of rotation, the fan will exhaust air out the back of the PSU.
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