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[Official] uSFF/SFF Club - Page 235

post #2341 of 2817
600 watt SFX from Silverstone SG08. Very quiet smile.gif
post #2342 of 2817
If my SFF case only have two 120 fan opening (Top and rear) and I plan to use radiators on both? How should I put the fan orientations? Should I bring air in or out the case
post #2343 of 2817
Quote:
Originally Posted by ivoryg37 View Post

If my SFF case only have two 120 fan opening (Top and rear) and I plan to use radiators on both? How should I put the fan orientations? Should I bring air in or out the case

I'd say one in, one out. I'm a pretty big proponent for equalizing your air pressure as much as possible.
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post #2344 of 2817
Personally I prefer positive pressure, especially in sff cases, although I would also consider buying 2 similar PWM fans, controlled using the same %, and having the higher rpm one as the intake. I do that for my evolv to try and keep dust low.
post #2345 of 2817
If the rest of the case is very well ventilated but just doesn't have fan mounts, both as exhaust may be best. Otherwise, one intake, one exhaust. What you probably don't want is two fans blowing hot air into a small, restrictive space and heating up everything inside a lot.

Really depends on layout, fan speeds used, what temperatures you care about, what the power supply is doing, etc.
post #2346 of 2817
Quote:
Originally Posted by ignsvn View Post

600 watt SFX from Silverstone SG08. Very quiet smile.gif

yeh its fairly quiet but its also alot heavier then other PSU.

my SG08 is really front heavy even with a decent size air cooler
post #2347 of 2817
Quote:
Originally Posted by akromatic View Post

yeh its fairly quiet but its also alot heavier then other PSU.

my SG08 is really front heavy even with a decent size air cooler

Is it? I thought good PSUs are generaly heavy due to the components they use?
post #2348 of 2817
Quote:
Originally Posted by ignsvn View Post
 
Quote:
Originally Posted by akromatic View Post

yeh its fairly quiet but its also alot heavier then other PSU.

my SG08 is really front heavy even with a decent size air cooler

Is it? I thought good PSUs are generaly heavy due to the components they use?

Eh. It's not like changing all the caps for some Japanese caps from Teapos will increase weight. The general components should be the same in weight.

 

It's a pretty bad heuristic to live by.

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post #2349 of 2817
Quote:
Originally Posted by ignsvn View Post

Is it? I thought good PSUs are generaly heavy due to the components they use?

used to be the case due to the usage of more heatsinks till fakes fill them with concrete or iron bars. heavier PSUs tend to indicate better cooling of components back in the days but today the lighter the better indicating the usage of more efficient parts requiring less cooling.

but honestly this is just layman's unit of measurement, its best not to go by weight but rather look up the OEM of the PSU and refer it to quality review sites like johnnyguru
post #2350 of 2817
Quote:
Originally Posted by mikeaj View Post

If the rest of the case is very well ventilated but just doesn't have fan mounts, both as exhaust may be best. Otherwise, one intake, one exhaust. What you probably don't want is two fans blowing hot air into a small, restrictive space and heating up everything inside a lot.

Really depends on layout, fan speeds used, what temperatures you care about, what the power supply is doing, etc.

I would advise against this if dust build-up is a concern. With negative pressure, you suck in dust through all the small holes and slits in the case as well as through the vents, so it is absolutely impossible to keep it from entering. If you configure both as intakes, you'll have a highly positive pressure setup, so by filtering both intake fans, you can get dust build-up down to a minimum.

The exhaust air from radiators isn't as hot as you might think, somewhere between +5°C and +15°C ambient. In the end, just playing around with it and testing will yield the best results. Heat convection and airflow are very reliant on the exact design of the case and the placement of the components, it is extremely hard to give an accurate prediction on what sort of setup will work the best without getting more information.
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