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Does PSU orientation really matter?

nothereanymore
By nothereanymore
in Power Supplies
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I've always wondered... ever since I saw how you mount the PSU into the Corsair Air 540. The case has caught my eye recently, and while I know Corsair wouldn't force you to use an improper orientation... is it optimal? I've never vertically mounted a PSU. Will it affect life span? Fan noise?

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It does not matter which way it is mounted :) 

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doesn't really matter unless it's on a fluffy carpet

CPU: Intel i7 5820K @ 4.20 GHz | Motherboard: MSI X99S SLI PLUS | RAM: Corsair LPX 16GB DDR4 @ 2666MHz | GPU: Sapphire R9 Fury (x2 CrossFire)
Storage: Samsung 950Pro 512GB // OCZ Vector150 240GB // Seagate 1TB | PSU: Seasonic 1050 Snow Silent | Case: NZXT H440 | Cooling: Nepton 240M
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1 minute ago, DXMember said:

doesn't really matter unless it's on a fluffy carpet

The case is going to be on a little bit of an angle, like 4 degrees. My house is a little weird... Doubt it'll affect it, hasn't affected my other builds from what I can tell.

i7 6700K @ Stock (Yes I know) ~~~ Corsair H80i GT ~~~ GIGABYTE G1 Gaming Z170X Gaming 7 ~~~ G. Skill Ripjaws V 2x8GB DDR4-2800 ~~~ EVGA ACX 3.0 GTX 1080 SC @ 2GHz ~~~ EVGA P2 850W 80+ Platinum ~~~ Samsung 850 EVO 500GB ~~~ Crucial MX200 250GB ~~~ Crucial M500 240GB ~~~ Phanteks Enthoo Luxe

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If its on carpet, I  recommend pointing it up so that it draws air from the case.

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2 minutes ago, Noirgheos said:

The case is going to be on a little bit of an angle, like 4 degrees. My house is a little weird... Doubt it'll affect it, hasn't affected my other builds from what I can tell.

it doesn't matter

CPU: Intel i7 5820K @ 4.20 GHz | Motherboard: MSI X99S SLI PLUS | RAM: Corsair LPX 16GB DDR4 @ 2666MHz | GPU: Sapphire R9 Fury (x2 CrossFire)
Storage: Samsung 950Pro 512GB // OCZ Vector150 240GB // Seagate 1TB | PSU: Seasonic 1050 Snow Silent | Case: NZXT H440 | Cooling: Nepton 240M
FireStrike // Extreme // Ultra // 8K // 16K

 

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Depending on the amount of heat your other components put out and the air flow of your case it can have a noticable effect on the noise. Having it pull fresh air can reduce the speed your psu fan has to spin to keep the psu cool. Talking  from personal experience. 

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4 hours ago, Noirgheos said:

I've always wondered... ever since I saw how you mount the PSU into the Corsair Air 540. The case has caught my eye recently, and while I know Corsair wouldn't force you to use an improper orientation... is it optimal? I've never vertically mounted a PSU. Will it affect life span? Fan noise?

The Air 540 mounting allows for PSUs with sleeve fan bearings to last awhile longer since sleeve bearings are not supposed to be mounted horizontally like they typically are in power supply configurations. So that matters.

 

Another thing to note is that you should not place a fanless PSU on its side like that as it needs air to breathe oh either side of the PSU, as in the left and right sides, not top and bottom. I remember asking Corsair about this and they basically said I would have to remove parts of an Air 240 to allow the PSU to breathe properly.

 

Also, in a standard configuration PSU like in, I dunno, a Define R5, you definitely want the fan facing down as that allows it to breathe better and last longer as it doesn't have to fight with GPUs for air. If your system is on carpet then it makes sense to flip it fan side up.

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