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Power Supply Fan facing up or down?

Tags:
  • Power Supplies
  • Components
  • Antec
  • Fan
  • Corsair
  • Cases
Last response: in Components
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March 12, 2014 4:14:58 PM

Hey guys, so I have an Antec 900 case "http://www.newegg.com/Product/Product.aspx?Item=N82E168..." and I have a Corsair RM 750w Power Supply "http://www.newegg.com/Product/Product.aspx?Item=N82E168...". My Antec 900 case does not have vents at the bottom of the case. I'm not sure if my power supply fan should be facing up or down? What is recommended? Do most people face it down or up?

More about : power supply fan facing

a b ) Power supply
March 12, 2014 4:21:11 PM

A top mounted PSU should be fan downward. A bottom mounted PSU should be fan pointing up (with no bottom vent).
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a c 275 ) Power supply
March 12, 2014 4:24:27 PM

It will work either way.
I have a HX750 fan down in an Antec 902(no venting cut-out) since 2009.
Still runs great.
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a c 2399 ) Power supply
March 12, 2014 4:25:55 PM

Usually the fan would face down but in the Antec 900 you have to have the fan facing up.

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March 12, 2014 4:26:07 PM

terry4536 said:
A top mounted PSU should be fan downward. A bottom mounted PSU should be fan pointing up (with no bottom vent).


Okay, this is my power supply. In this picture, the fan is facing down. "http://www.avadirect.com/images/items/PSU-CSR-CP9020055..." So if I put the fan facing up, those words are going to be upside down which I think would not be right.
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a c 2399 ) Power supply
March 12, 2014 4:27:56 PM

Look at the pic I just posted above.
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a b ) Power supply
March 12, 2014 4:28:51 PM

most top mount psu's face fan down and act as a supplementary exhaust. Bottom mounted psu's with grills in the bottom of the case can be mounted either direction, either drawing hotter air from around the gpu and exhausting that outside the case, or drawing colder air from outside and exhausting outside. With no grill/mesh on the bottom of the case you will have to mount it fan upwards. This is perfectly normal and acceptable.
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a b ) Power supply
March 12, 2014 4:29:26 PM

There is a space below the bottom mounted PSU. The air flow is just more restricted with the fan pointing down. Alternatively, it avoids "stuff" falling into your PSU fan.
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a b ) Power supply
March 12, 2014 4:35:32 PM

Its an RM series psu, not a good idea to restrict airflow by flippin it fan down, unless the 900 has a decent gap under the psu. Sorry, don't know that case really.
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a b ) Power supply
March 12, 2014 4:36:38 PM

I gotta learn to type faster, ya'll are shootin answers faster than I can get the words down... sheesh
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