Hi all, I am replacing an AT power supply fan that was pulling air out so it was not blowing air onto the internals of the power supply but should I replace the fan the same way it was originally or is it best setting it as blowing air onto the components or sucking the air out? the fan is located at the back of the PC so not below the psu inside the case.
The same direction it originally had, which in 99,99% of the cases is pulling air out of the PSU.
The power supply generates a good amount of heat, so the PSU fan is typically designed to extract this heat and dump it outside the case. You don't want to blow that hot air into your PC case.
I believe it was more common with AT and early ATX to pull air in through the PSU and it would exit wherever it could. ATX is when the front in, rear out config became standard.
I've made sure to flip that around in all of my stuff. Hate the dusty PSU syndrome.
