Fan ratio & orientation.

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30 May 2010
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I noticed that my PSU has a bottom orientated exhaust which would not be a problem for me if the PSU unit sat in the bottom of my case but unfortunately it's mounted at the top. My CPU cooler sits directly below it and has a funnel/fan guard that seems to prevent the hot air from the PSU from entering into the intake on the CPU fan BUT the hot fan on the PSU blows almost directly over the heat sink below the CPU fan.

I have one intake fan at the front, two on the side panel and an exhaust at the back. I have heard that the ratio for fans ought to be 1 intake for every 2 exhaust. If this is true then there's something very wrong with my fan orientation.

I can't say whether this setup is working well because I haven't OC'd my mobo or installed my GPU since I'm still waiting for my new PSU to arrive but the new one is also a bottom exhaust since most PSUs seem to be this way.

Does anyone else have something similar going on in their case?

I'll be upgrading the cooler to a H50 once that arrives and I'm dreading the thought of coming up with a viable airflow solution with that thing since I'll have to turn my exhaust fan backwards and make it intake to blow cold air on the H50's radiator especially since there's no top exhaust on my case. :rolleyes:
 
almost all PSU's have an intake on the bottom, the guard on the cpu cooler is to stop the psu fan sucking hot air into the psu... unless you are buying something odd! what psu do u have, and what are you replacing it with?
 
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