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Power Supply losing power supplying capabilities over time?

post #1 of 29
Thread Starter 
As title states, is it possible? My main rig isn't booting off of my main drive by my main PSU. Had to get an old 90w strictly for the HDD. Works for a ghetto rig right now, but I need an answer.
    
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post #2 of 29
Yes, a PSU can, over a long period, degrade slightly in terms of the amount of power it can deliver. Like, a low-quality 500W PSU that's been run hard for 5 years might degrade during that time to only be able to provide 450W.
    
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post #3 of 29
yeah it could be on the verge of going and outputting less then spec's power. My guess anyways.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026&cm_re=cx430_v2-_-17-139-026-_-Product

Get one of those, good price with the rebate
post #4 of 29
Quote:
Originally Posted by brettjv;13713631 
Yes, a PSU can, over a long period, degrade slightly in terms of the amount of power it can deliver. Like, a low-quality 500W PSU that's been run hard for 5 years might degrade during that time to only be able to provide 450W.

Wouldn't the low quality 500w only be delivering 450w tops from the start? So possible degrade into the high 39x's or low 400w by then?

Asking because I'd like to learn. Thanks.
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post #5 of 29
It does happen but only after prolonged periods of time. That said, it's only a matter of time before you start getting problems with that Logisys in your sig.
post #6 of 29
Thread Starter 
Quote:
Originally Posted by Shub;13713669 
It does happen but only after prolonged periods of time. That said, it's only a matter of time before you start getting problems with that Logisys in your sig.

Its happening today. Couldn't boot with my HDD connected to the PSU anymore, it sounded like the HDD would restart during the boot-up process.

I may go for this eventually:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817182202
    
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post #7 of 29
In normal operation, the components should pretty much hold up and the product should be outputting close to original capacity for a while. But I suspect if some components fail like some secondary side filtering capacitors begin to die and leak, performance would be compromised more than what people above have been saying. e.g. ripple might become too high at higher loads, so effective capacity is lower than say 450W on a 500W unit. However, the unit may still be able to power on your computer at lower loads.
post #8 of 29
Thread Starter 
Its 2 and a half years old. And was 24 dollars. I'm not surprised, I've heard some horror stories.
    
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post #9 of 29
Quote:
Originally Posted by MR KROGOTH;13713954 
Its 2 and a half years old. And was 24 dollars. I'm not surprised, I've heard some horror stories.

Honestly, I wouldn't even attempt to run the PSU any longer. The protection in a unit that cheap is bound to be awful.

And yes, components will degrade over time, especially the capacitors. If you look at most PSU calculators, they will ask you the age of the PSU and factor in some wear and tear.

That is why IMO, you should always plan for extra headroom when choosing a PSU. Not only for degredation, but for the simple fact that the unit won't be working as hard to deliver the necessary power.
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post #10 of 29
Thread Starter 
Quote:
Originally Posted by corky dorkelson;13714010 
Honestly, I wouldn't even attempt to run the PSU any longer. The protection in a unit that cheap is bound to be awful.

And yes, components will degrade over time, especially the capacitors. If you look at most PSU calculators, they will ask you the age of the PSU and factor in some wear and tear.

That is why IMO, you should always plan for extra headroom when choosing a PSU. Not only for degredation, but for the simple fact that the unit won't be working as hard to deliver the necessary power.

Its the only one I have that puts out that much. It did have headroom - Back for my E2200, and a 2400 Pro.
    
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