Centrix8
2 Bronze

Psu replacement question

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Hello friends, I have a dell optiplex 790 with a psu that has a rear mounted fan (by the plug) when I install a new psu should the fan be facing inwards (towards the motherboard) or outwards (towards the case) the psu is mounted in the top left corner by the way, thanks

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speedstep
8 Krypton

Re: Psu replacement question

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Mini Tower can use standard EPS12v PSU EVGA 700BR or equivalent.

Smaller models cannot use this inside the case because its too big.

https://www.dell.com/support/kbdoc/en-us/000129376

790 family.jpg


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redxps630
5 Rhenium

Re: Psu replacement question

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Re: when I install a new psu should the fan be facing inwards (towards the motherboard) or outwards (towards the case)

new psu can only be mounted to case rear side in one orientation because standard  mounting hole spacing is not symmetric. you can not flip the psu upside down to mount it.  aftermarket psu fan is typically intake and rear side of psu has grill for heat exhaust.


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speedstep
8 Krypton

Re: Psu replacement question

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Mini Tower can use standard EPS12v PSU EVGA 700BR or equivalent.

Smaller models cannot use this inside the case because its too big.

https://www.dell.com/support/kbdoc/en-us/000129376

790 family.jpg


Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






Get Support on Twitter @DellCaresPro

View solution in original post

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Centrix8
2 Bronze

Re: Psu replacement question

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Can the Mt have a corsair cx 750?

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speedstep
8 Krypton

Re: Psu replacement question

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CORSAIR CX750M V2  CP-9020154-NA 750W ATX12V v2.4 / EPS12V 2.92 80 PLUS should be fine.

  • ATX12V v2.4 / EPS12V 2.92
  • Semi-Modular
  • 80 PLUS BRONZE Certified
  • 100 - 240 V 47 - 63 Hz
  • +3.3V@25A, +5V@25A, +12V@62A, -12V@0.8A, +5VSB@3A

Report Unresolved Customer Service Issues
here

I do not work for Dell. I too am a user.

The forum is primarily user to user, with Dell employees moderating
Contact USA Technical Support






Get Support on Twitter @DellCaresPro

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redxps630
5 Rhenium

Re: Psu replacement question

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Re: when I install a new psu should the fan be facing inwards (towards the motherboard) or outwards (towards the case)

new psu can only be mounted to case rear side in one orientation because standard  mounting hole spacing is not symmetric. you can not flip the psu upside down to mount it.  aftermarket psu fan is typically intake and rear side of psu has grill for heat exhaust.


View solution in original post

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