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 Post subject: fanless PSU - bottom or top mounting?
PostPosted: Sat Oct 05, 2013 4:20 pm 
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Joined: Sun Jan 25, 2004 2:01 am
Posts: 1112
fanless PSU like seasonic require the vents to point up.

i'd like to know is it better for fanless psu to be bottom mounted or top mounted on atx cases?

Some top-mounted ATX cases have no venting holes, which I would think might present ventilation problems for such fanless PSU


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 Post subject: Re: fanless PSU - bottom or top mounting?
PostPosted: Sun Oct 06, 2013 4:38 am 
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Joined: Mon Mar 17, 2008 1:49 pm
Posts: 1532
Location: UK
Why always so many questions? Haven't these topics all been covered in depth elsewhere?
http://www.silentpcreview.com/fanless-psu-build-guide

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 Post subject: Re: fanless PSU - bottom or top mounting?
PostPosted: Sun Oct 06, 2013 3:40 pm 
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Joined: Sun Sep 05, 2004 1:51 pm
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Location: Gefle, Sweden
Top mounted is simply never a good idea regardles of the individual power supply design. Bar some really exotic case design perhaps, but none that I've seen.


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 Post subject: Re: fanless PSU - bottom or top mounting?
PostPosted: Sun Oct 06, 2013 3:52 pm 
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mkk wrote:
Top mounted is simply never a good idea regardles of the individual power supply design. Bar some really exotic case design perhaps, but none that I've seen.


according to the article, top-mounted w/holes at the top is ideal for fanless PSUs.

not sure how that effects the cpu cooling though


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 Post subject: Re: fanless PSU - bottom or top mounting?
PostPosted: Sun Oct 06, 2013 4:33 pm 
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Joined: Tue Nov 02, 2004 12:22 pm
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Location: Guatemala
mkk wrote:
Top mounted is simply never a good idea regardles of the individual power supply design. Bar some really exotic case design perhaps, but none that I've seen.
While i agree with you into most, i do think there are exceptions, for example Antec Solo II and Silverstone TJ08-E / FT04, all of them have top mounted PSU and they have a grill on top, so for a passively cooled or semi passive this helps exit the hot air of the PSU and not affect much the hole system temp, while on something like the Fractal R4 with bottom mounted, it will increase the air inside. That said i favor bottom mounted, but not fully passive, semi passive is fine with fan facing down.

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