FYI: Should you put PSU (SMPS) upward facing or downward facing?

Power supply unit is a essential component when building a computer.

When building a computer we have to look for many aspects but often we don’t put much stress on PSU position, today we’re here to help you with that.

Power supply unit, shortly knows as PSU and SMPS.

Some PSU have a back fan that work as exhaust. Other have a fan on the top to intake air and throws from rear. The question is how should you put PSU on your cabinet, the options are quite simple.

If there’s a fan on top.

When your PSU has a fan, you have two options depending on the PSU location in cabinet.

Apply the PSU upward facing when you have to place it somewhere top in cabinet. This sometimes can led you to two situations.

Cabinet don’t have air vent on top side.

If that’s the case, put PSU down facing.

When your cabinet has top power supply position with a separate chamber.

Cabinet situation – if power supply position is on top, and there is a vent on top of the cabinet case, put it upward facing so it can take air from outside.

On the other hand if there is no top vent on your cabinet, put it downward facing, the fan will get air from inside the cabinet and exhaust it from rear. It will also lead psu to work as a exhaust fan and decrease the temperature.

PSU position cheat sheet.

  • No chamber + Top vents = Upward facing
  • No chamber + No top vents = Downward facing

When your cabinet has bottom power supply position (with a separate chamber).

1. Chamber don’t have top vent – in this case the vent will be on the bottom side to put your PSU, down facing.

2. Chamber have top vent – put PSU upward facing.

3. Bottom position with no chamber, upward facing.

  • Bottom chamber + Top vents = Upward facing.
  • Bottom chamber + bottom vents = Downward facing.
  • No chamber + No vents = Upward facing.
  • No chamber + Bottom vents = Upward facing.

So this was a quick troubleshoot for people building a PC. If it help, do share it with your friends so they know the best way to put PSU.

It is nice that you can use a Power supply to work as an additional exhaust fan to keep your system cool.

We’re also working to publish some gaming rigs combination powered by Intel’s 8th generation processor.

Leave a Reply

Your email address will not be published. Required fields are marked *

You May Also Like