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Low Wattage PSU Question

post #1 of 19
Thread Starter 
If a PSU is too small for a computer, Does it blow up? Because i just upgraded my hardware, i5 760 build, and when i turned it on, The PSU started smoking.. So then i quickly pulled the plug, And pulled out the PSU and tried jumpstarting it, It idnt power. Also it didnt make a big bang, It just started smoking, So my question is, has this fried my components? (The PSU is a 400 Watt "Clipper Pro")
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post #2 of 19
There is no way to tell without replacing the PSU first. I hope for your sake that you didnt burn out any other components.

Let us know what your budget is for a new PSU.
post #3 of 19
Thread Starter 
Quote:
Originally Posted by Mattb2e View Post
There is no way to tell without replacing the PSU first. I hope for your sake that you didnt burn out any other components.

Let us know what your budget is for a new PSU.
Well I definitly hope i havnt killed anything as i have done it before, and i will look like the biggest idiot if i done it a second time. Anyway i honestly dont really have a budget, i just need a reliable PSU that will do me for a GPU upgrade aswell (i only have a 9400GT, and plan to get a 460GTX maybe)
my current componenets are a i5 760, P55A UD3 Mobo, and 4GB of 1600MHz RAM.
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post #4 of 19
Well... the setup you posted would run fine on a good 400W unit like the Antec Neo Eco 400W. But just in case you decide on something more power hungry than a GTX 460, I'd recommend the Antec Neo Eco 520.
post #5 of 19
400W would be plenty of power to run that system. Hopefully a new PSU cures your problem without further damage.
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post #6 of 19
Thread Starter 
Wait, So your telling me that a 400 watt is plenty? Then why did it blow? Also im running 3 X 120mm LED fans and a 32cm Cathode.. If that changes anything.
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post #7 of 19
The unit you had that blew, well... it blew because it was a piece of garbage. To put it bluntly Probably it wasn't really a 400W unit, more like a piece of junk they picked up and randomly slapped a 400W sticker on it because they thought it sounded nice.
post #8 of 19
Thread Starter 
Hmm okay then, Because it just came perfectly working out of a 2GHz Athlon dual core build. But i guess it isnt a top quality PSU, And it is old.. But since it was low wattage, How would that be able to fry my componenets since they need more power than the PSU can even give?
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post #9 of 19
Quote:
Originally Posted by kungfuelmo View Post
Hmm okay then, Because it just came perfectly working out of a 2GHz Athlon dual core build. But i guess it isnt a top quality PSU, And it is old.. But since it was low wattage, How would that be able to fry my componenets since they need more power than the PSU can even give?
When a crap power supply is overloaded, one of the major silicon components (switching transistors or rectifiers or whatever) may fail catastrophically. This causes a major voltage spike that can cause serious damage to anything downstream of it. Pops capacitors, fries MOSFETs, bricks ICs, etc. Often kills motherboards, graphics cards, and hard drives. Poor PSUs often lack, or poorly implement, basic protections like OVP and OCP that would otherwise shut the PSU down to limit the damage done.



From what I can find your power supply is a cheap piece of fecal matter bundled with a cheap-ass generic case. I can't find any precise details, or even decent pictures; but such units are generally decade-old designs built in aging factories with the cheapest components possible and can rarely provide more than 250W regardless of what's on the label, and rarely even do that within the ATX specifications.
Edited by Phaedrus2129 - 1/12/11 at 10:35pm
post #10 of 19
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
When a crap power supply is overloaded, one of the major silicon components (switching transistors or rectifiers or whatever) may fail catastrophically. This causes a major voltage spike that can cause serious damage to anything downstream of it. Pops capacitors, fries MOSFETs, bricks ICs, etc. Often kills motherboards, graphics cards, and hard drives. Poor PSUs often lack, or poorly implement, basic protections like OVP and OCP that would otherwise shut the PSU down to limit the damage done.



From what I can find your power supply is a cheap piece of fecal matter bundled with a cheap-ass generic case. I can't find any precise details, or even decent pictures; but such units are generally decade-old designs built in aging factories with the cheapest components possible and can rarely provide more than 250W regardless of what's on the label, and rarely even do that within the ATX specifications.

Well i really, really hope no damage has been done because i just bought these new parts. Im getting an antec 500w this weekend, Ill let you know if anythings destroyed. I have definitly learnt the lesson that you can not skimp out on a cheap PSU
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