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Old 01-08-2012, 06:56 AM   #1 (permalink)
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Default What will happen if the PSU is not good?

If the current on the 12V rail is too small, what will happen to the components in a computer?

will the PSU just crash? if so, is it possible to use the components again or will i have to replace everything?
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Old 01-08-2012, 08:10 AM   #2 (permalink)
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Default Re: What will happen if the PSU is not good?

If the PSU is a good quality but underpowered then your other components will not work, or may stop working when they start to draw a lot of power ( ie under load) but it is unlikely that anything would be damaged.
If the PSU is low quality or offers insufficient protection to the components then a PSU failure (whether it is underpowered or not) may damage other components.
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Old 01-08-2012, 08:47 AM   #3 (permalink)
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Default Re: What will happen if the PSU is not good?

Ah, i see.

will this
Storm Black Edition STORM-600W 600W Power Supply (PSU) - Scan.co.uk

be considered bad enough PSU to damage my components? or is it not possible to tell just by look at it?
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Old 01-08-2012, 09:02 AM   #4 (permalink)
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Default Re: What will happen if the PSU is not good?

I'd definitely avoid that PSU. Take a look at the PSU guide here:
*READ FIRST* Updated Power supply guide
The second post is basically where you need to start.
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Old 01-08-2012, 09:05 AM   #5 (permalink)
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Default Re: What will happen if the PSU is not good?

Quote:
Originally Posted by kmote View Post
I'd definitely avoid that PSU. Take a look at the PSU guide here:
*READ FIRST* Updated Power supply guide
The second post is basically where you need to start.
haha yeah, i read through that post earlier to find a new psu, but the psu i just mentioned is the one i currently have (it came with my pc).

i'm taking it will damage my components then?
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Old 01-09-2012, 07:23 PM   #6 (permalink)
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Default Re: What will happen if the PSU is not good?

It will only damage your components if anything happens to it like shorting out, If it doesnt have the proper protection it could take other things with it when it dies.

I ran my rig ( not my current one ) but a sli GTX 275 off a Generic 750W PSU for about 2 years and it ran fine. I bought a Powercooler 950 Modular PSU which blew up on me but luckily didnt take anything out.

I now have Corsair TX 850W V2 PSU - 80plus Bronze Certified | Ebuyer.com which is running excellent.

I totally disagree with people saying Generic PSU's are totally unreliable but then would also say if you can afford it, get a decent one.

I work as a Technical advisor and deal with a lot of Samsung Products, Which are total crap. Even the best or most popular make can go wrong and cause problems.
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Old 01-09-2012, 07:45 PM   #7 (permalink)
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Default Re: What will happen if the PSU is not good?

Quote:
Originally Posted by KpCollins View Post
I totally disagree with people saying Generic PSU's are totally unreliable but then would also say if you can afford it, get a decent one.
Generic power supplies lead to all kinds of stability issues, delivering low or dirty power can cause other components to run at the bottom or even below the recommended specifications. The system may appear to work properly but it will usually have random problems that seem to appear and go away by magic at times. I can't even count the number of systems I fixed that appeared to work most of the time but a new power supply eliminated all the random problems.
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Old 01-09-2012, 08:36 PM   #8 (permalink)
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Just go to johhnyguru.com. He knows psu's.
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Old 01-10-2012, 09:20 AM   #9 (permalink)
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Default Re: What will happen if the PSU is not good?

Just makes sure the power supply is 80 plus certified in some manner, that should eliminate most crappy inferior products.
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Old 01-15-2012, 03:35 PM   #10 (permalink)
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Not.that true. Rosewill makes psus with 80+ & they are garbage. If the psu is bad the first signs are pc shuting off while gaming. My corsair tx750 did it until swapped it out. Had very little load on it too.
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