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How much does a PSU degrade over time?

post #1 of 7
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hi guys.

I am wondering, how much(more or less) does a brand-name PSU degrade over time.
For an instance, how many Watts/ampers are lost after 2 years of 24/7 continous use of a PSU?

I was surprised that I couldn't find any information regarding this subject. No review has ever referred to this matter. I believe this is a shame since it is a very important factor.
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post #2 of 7
I dont think a psu can lose amperes. It either works well or dies. I've had a psu in a computer for 5 years and it does everything fine.
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post #3 of 7
Quote:
Originally Posted by Retrospekt View Post
I dont think a psu can lose amperes. It either works well or dies. I've had a psu in a computer for 5 years and it does everything fine.
Actually, I have heard about PSUs loosing efficiency, or power, or something over time. I can't quite remember what exactly it was now, but I'm pretty sure they do degrade in some way over time. It's only over a few years (2-5) as well, not like, 20 years or something. Hmmm, need to do some research on this .

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post #4 of 7
Quote:
Originally Posted by GGuyZ View Post
hi guys.

I am wondering, how much(more or less) does a brand-name PSU degrade over time.
For an instance, how many Watts/ampers are lost after 2 years of 24/7 continous use of a PSU?

I was surprised that I couldn't find any information regarding this subject. No review has ever referred to this matter. I believe this is a shame since it is a very important factor.
Depends entirely on the quality of a PSU. Top quality PSUs can last for as much as 5 years, others not so long.
    
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post #5 of 7
Even if they do degrade, i dont think it would be extreme. And they would only lose efficiency, not amperes, right?
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post #6 of 7
Quote:
Originally Posted by Retrospekt View Post
Even if they do degrade, i dont think it would be extreme. And they would only lose efficiency, not amperes, right?
Agreed.

Quote:
Originally Posted by GGuyZ
I was surprised that I couldn't find any information regarding this subject. No review has ever referred to this matter. I believe this is a shame since it is a very important factor.
Why? Because it's not something significant enough to cause any kind of deficiency problem.
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post #7 of 7
Quote:
Originally Posted by Retrospekt View Post
Even if they do degrade, i dont think it would be extreme. And they would only lose efficiency, not amperes, right?
That sounds about right. The regulators in the PSU are going to do what they can to create the voltage necessary. Over time the components will degrade, but as Retro guessed, efficiency will suffer, not voltage/amperage. If voltage drops, it's a function of damage or substandard components, not degradation.
    
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