UPS with PSU

[Richard0666]

I am looking into buying a UPS to protect my future PC build's components. If I buy a UPS, do I still need to buy a PSU? I am quite sure that a UPS acts like a PSU with the addition of a battery but I would like to be sure.

[Herman Mcpootis]

you'll still need a PSU, they're completely different.

[Tibon]

You are wrong, they are completely different device for different purposes.

A PSU is mandatory in any built, an UPS is optional although recommended.

 

A psu is used to power the whole system, an ups is used as a backup in case of power outage to give enough time for the user to shutdown the system normally to avoid damage to other components or data loss.

 

If i would roughly describe these two then, a PSU is a AC to DC converter, while UPS is DC to AC.

this is not entirely correct but maybe easier to see the difference.

Edited September 8, 2018 by Tibon