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Low Wattage PSU Question

1.2K views 18 replies 8 participants last post by  kungfuelmo  
#1 ·
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")
 
#2 ·
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.
 
#3 ·
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.
 
#8 ·
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?
 
#9 ·
Quote:


Originally Posted by kungfuelmo
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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.
 
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#10 ·
Quote:


Originally Posted by Phaedrus2129
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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
Image
 
#12 ·
I have no clue where you're from, but I'm going to assume it's the US, and suggest a power supply or two from Newegg:

Either:
Antec Neo Eco 400C. This on the basis that it's an Antec, but I can find no review for it.

Kingwin ABT-450MM. This one on the basis of This review. Note the postage, so if you can, I'd suggest you find somewhere cheaper for it.

Antec have some other low-wattage units I'd recommend, but my advice is to stay away from the Basiq series. Everything else they make is really very godo.
 
#13 ·
Quote:
Originally Posted by Korlus;11996077
I have no clue where you're from, but I'm going to assume it's the US, and suggest a power supply or two from Newegg:

Either:
Antec Neo Eco 400C. This on the basis that it's an Antec, but I can find no review for it.

Kingwin ABT-450MM. This one on the basis of This review. Note the postage, so if you can, I'd suggest you find somewhere cheaper for it.

Antec have some other low-wattage units I'd recommend, but my advice is to stay away from the Basiq series. Everything else they make is really very godo.
I would go with the Antec personally, considering its only $35 with free shipping after the rebate.
 
#15 ·
Quote:
Originally Posted by harishgayatri;11996886
get the Huntkey X7 900W or Rocketfish RF-900WPS( cheaper in ebay)

They both are very good units.
I had a smaller PSU in mind :DAfter all i only have a 9400GT

Quote:
Originally Posted by Korlus;11996077
I have no clue where you're from, but I'm going to assume it's the US, and suggest a power supply or two
Im actualy from Australia, Thanks anyway.

Im actualy looking at this PSU (http://www.centrecom.com.au/catalog/product_info.php?sort=2a&products_id=46687)

Its because the Shops just out from where i live, so i dont have to pay postage (Postage ruins online buying in Australia).
So its a budget PSU that i could probably use for now untill i decide to go and get an XFX 750w Black edition i think their called. So any objections on the PSU im looking at, Go ahead.
 
#16 ·
The Antec Basiq 500W is decent but it's not really a 500W unit. It can only deliver 348W at 12V. It'll work for both your current system with the 9400GT and the planned upgrade to a GTX 460, but I wouldn't do any overclocking or benching on that PSU.
Consider this unit instead: http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_226&products_id=13454

Edit: didn't see that you'd rather use a local shop -- it's up to you. Like I said the one you linked to should work alright, it's a decent unit.
 
#17 ·
Quote:
Originally Posted by Shub;11999492
The Antec Basiq 500W is decent but it's not really a 500W unit. It can only deliver 348W at 12V. It'll work for both your current system with the 9400GT and the planned upgrade to a GTX 460, but I wouldn't do any overclocking or benching on that PSU.
Consider this unit instead: http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_226&products_id=13454

Edit: didn't see that you'd rather use a local shop -- it's up to you. Like I said the one you linked to should work alright, it's a decent unit.
Thanks, But if thats a decent unit then it will be ok i guess, I Wont be doing any overclocking since i have a stock cooler on my CPU, And im just getting a budget PSU untill i gather some money for a larger one.

Just a question, How do you figure its 348w on the 12v?

EDIT: I rang up centrecom and they said they had none in stock, They do however have some silverstone 500w PSU's in stock, I dont know the name of them but its gonna cost $75, Depending on what you guys say, Ill probably be buying that..
 
#18 ·
Quote:


Originally Posted by kungfuelmo
View Post

I had a smaller PSU in mind
Image
After all i only have a 9400GT

Im actualy from Australia, Thanks anyway.

Im actualy looking at this PSU (http://www.centrecom.com.au/catalog/...ducts_id=46687)

Its because the Shops just out from where i live, so i dont have to pay postage (Postage ruins online buying in Australia).
So its a budget PSU that i could probably use for now untill i decide to go and get an XFX 750w Black edition i think their called. So any objections on the PSU im looking at, Go ahead.


I think for the price the Huntkey X7 900 is excellent plus you wont have to spend again for a PSU.