PSU lifespan thoughts

Soldato
Joined
12 Apr 2007
Posts
12,806
Somthing that has occured to me over the last few weeks is the question of how long a psu is supposed to last.
Ive read here and in other places about varying standards of psu which fail, some generic, and some branded "performance" units...
...and regardless of the psu, it seems to be not uncommon for a faliure of some kind to occur after 2-3 years usage.

Now call me a demanding consumer if you will, but that to me seems pretty poor. Even more so for the more expensive psu's.

TBH its not somthing ive ever experienced (touch wood), the first psu I ever bought on its own is the 600w model im curently using, and I bought that to replace a generic one (about 4 years old), purely because the generic one didnt have the nessesary cable layout and GPU connections.

Maybe an overclocked PC would shorten the lifespan by making the unit work harder, but presuming the overclock results in power demands that are still within the PSU's spec, that shouldn't make any difference surely?

I understand the fact that more faliures are posted on forums than sucsess stories, as you wouldnt go on the net and say "hey my psu is 6 years old and still going strong".

It just makes me raise an eyebrow when people say "yeh, brand X are great, mine lasted 2 years, they are really good"

Thoughts?
 
Yeh, thats part of the reason I got the corsair....

I was just a bit bemused, after reading some posts that PSUs had lasted 2 years and they seem happy with that! I wouldn't be unless I was pushing the limits on it.

Unless its refering to an upgrade replacement rather than replacing a failed unit.
 
Don't know if it is true or not but I've seen it said in tech forums that PSUs age. That is to say as they get older year on year the max wattage they supply across all their voltage lines drops.

If true I can see that this might lead to instability and look like a failure when a borderline PSU can't quite supply the power across all lines due to ageing.

Yeh capacitors do degrade, not sure wether thats age related or usage related though....I would suspect the latter, the harder and longer they are actually used, the quicker they degrade.
 
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