PSU fan, up or down?

joffy · 23 Apr 2011 at 18:16

Just ordered a Coolermaster CM-690 II Lite case that has the PSU installed at the bottom. I've seen pics where people have the PSU fan facing up blowing into the case, but wouldn't it better to have it facing down? Seems to be plenty of clearance underneath the case.

Dokinator · 23 Apr 2011 at 18:18

I have experienced both up and down, firstly I had the PSU with the fan facing down and at the bottom of the PC case, it got very dusty, so I have since swapped it around and have it facing in. Seems to be better that way

setter · 23 Apr 2011 at 18:18

If the case has vents on the floor, id set the psu with the fan facing down.

mraerosmith1981 · 23 Apr 2011 at 18:22

Facing down if you have a dust filter on the bottom, if not face it up, but facing down is better I think as it pulls the air straight in then out

chrisarm · 23 Apr 2011 at 19:06

had mine facing up till I rma'd my mobo, when I did my refit I put it facing down. now my cpu is about 2 oC warmer. Dunno if this is just a coincidence

stulid · 23 Apr 2011 at 19:27

PSU faces downwards with this case.

maj · 23 Apr 2011 at 19:34

If the CM690 II lite has dust filters on bottom of case like the Advanced version, then I'd have the fan facing downwards.

stulid · 23 Apr 2011 at 19:37

Theres a filter supplied in the box of bits, place this over the holes in the bottom and sit the PSU facing downwards.

Tediore · 24 Apr 2011 at 00:58

Down if you can.

With a dust filter it's not a problem, and from looking at the dust that gets on my PSU filter compared to what gets into my case, it's going to have a longer life facing down...

Rob_J · 24 Apr 2011 at 10:05

I have this case and with the supplied dust filter I have my PSU facing down

joffy · 24 Apr 2011 at 15:14

Thanks for the info. Does the Lite/Basic version have the dust filter?

stulid · 24 Apr 2011 at 15:58

The lite does, the Advanced should too.

PB94941 · 24 Apr 2011 at 22:16

i'de say down