Is my PSU a piece of junk?

Started 2 months ago | Questions thread
Eric Carlson
Eric Carlson Veteran Member • Posts: 7,113
Not Junk

Chris Noble wrote:

BobKnDP wrote:

Chris Noble wrote:


80 Plus is the lowest efficiency rating for power supplies. 20% of the power is lost as heat to cook the rest of the electronics and run your fans at high power. Yes, a piece of junk.

You should get at least an 80 Plus Gold PS.

That seems immoderate.

If 20% of the input power is dissipated as heat, the PS is a piece of junk. That level of inefficiency indicates that all the components are the lowest grade available, so it certainly impacts longevity and input spike dissipation as well. There is no efficiency rating lower than 80% -- that tells you all you need to know.

There are (or at least were) lots of power supplies that are not 80+ rated. Some are around 70% efficient. Any 80+ rating is an improvement over none.

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