Fan up or down

Soldato
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31 Oct 2007
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Gods County(Allegedly)
Am building a new system in a Corsair 780T case. PSU is a 1000w Leadex platinum.

Fitting the psu is proving a little more difficult than I anticipated as if I place such in my preferred position i.e. fan facing down to blow hot air out of the case ; the screw holes do not line up properly, the cables do not seem to fit naturally & the auto/eco switch is upside down!

i.e. the psu does appear to prefer to be seated so that the fan pushes air into the case .

Not overly happy with this , although I will be watercooling both cu and gpu's so do not anticipate any heat problems .Case comes with 2 x 140 intake + a 140 rear exhaust and when I add the intended 360 roof and 120 (might go to 240) floor rads this will add at least 4 exhaust 120 fans.

Thoughts ? Am I better following the psu'e preferred approach or should I persevere with what I think is the best approach?

Does it matter that much?
 
The psu fan sucks air in through the psu and out through the vents in the rear so nothing is exhausted into the case. Personally if the case has a vent for the psu to suck air through the bottom (especially if it's filtered) then I would always go for fan down and try to find a solution to any problems. I have never had a psu/case combination that has thrown up the problems you have encountered though. I wouldn't be bothered about the switch, just remember it's upsidedown.

No problem with the switch ;)

Would say that I have assumed that when the fan runs it is pushing air out of the psu not sucking it in - if I' ve got this wrong and what is happening is that the psu fan runs to suck cold air into it to cool it then the equation does look a little different. (am not too bothered if the air being sucked in is either from the front of the case (fan facing upwards) or from outside (fan facing downwards) as both will be filtered and cool'ish).

Will check tonight - will probably find that I have misread things - again - :confused::o
 
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