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Hard data for PSU failure???

post #1 of 67
7/19/12 at 2:22pm
Thread Starter 
I keep looking at low price PSU's like those by CiT, but they get a lot of dissing online, anecdotal evidence of cheap PSU's failing.

Are there any figures collected on PSU failure rather than just folk on forums complaining?
The Watt Gobbler
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The Watt Gobbler
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post #2 of 67
7/19/12 at 2:25pm
  • TwoCables
  • I love PSUs! I also love ASEA! (they're unrelated)

Reviews of bad PSUs may be able to be found on JonnyGuru.com.  I've also seen HardOCP do some decent reviews.

 

Which PSU are you looking at exactly?

 

What are you going to be powering (specifically the CPU and the GPU(s))?

It's like advanced alien technology! :)
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It's like advanced alien technology! :)
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post #3 of 67
7/19/12 at 2:28pm
Quote:
I keep looking at low price PSU's like those by CiT,

yknow the saying, you get what you pay for, try to avoid diablotek and logisys as well.
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post #4 of 67
7/19/12 at 2:29pm
Thread Starter 
Well, I thought maybe 650W CiT, or thereabouts, to go crossfire.

But GPU's seem to be getting really efficient so I can maybe get away with the 550W coolermaster I use now.

I've used a 450W CiT gold for a couple of years without problem, BTW.

Anyway thanks for the tips, I shall give them a look!
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The Watt Gobbler
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post #5 of 67
7/19/12 at 2:36pm
  • TwoCables
  • I love PSUs! I also love ASEA! (they're unrelated)

All it takes is 2-3 years for a low-quality PSU to suddenly start showing signs that it's not a good PSU.

 

What are you going to Crossfire?

 

Just be aware that the wattage rating of these kind of PSUs (probably including the Cooler Master) is only concerning its temporary peak capacity, not its continuous.  This is one reason why it's important to get a quality, recommended PSU.

 

Another reason is the power delivery.  Cheap PSUs deliver dirty and very unstable power (lots and lots of ripple).  This can harm components in the long run.  Quality, recommended PSUs deliver clean and stable power - and the PSUs themselves last for several years without any problems.  Plus, they can handle all kinds of overclocking.

 

The PSU is the single-most important part of a computer system, especially when that system is being overclocked.

 

 

I'm not trying to say that CiT PSUs are all garbage, but I'm just generalizing.


Edited by TwoCables - 7/19/12 at 2:39pm
It's like advanced alien technology! :)
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It's like advanced alien technology! :)
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post #6 of 67
7/19/12 at 4:03pm
Thread Starter 
Well, I do hear those HD 77XX's are easy on the Watts, so I was thinking if I was to go down that route maybe a couple of those.

But I think maybe I will look at some better quality PSU if the cheaper ones don't have a good lifespan.
I know the cooler master that I used is supposed to be a bit dirty, according to review, but not so bad it can't be used.
This is what I use currently (a pun!)
http://www.hardwaresecrets.com/article/Cooler-Master-eXtreme-Power-Plus-500-W-Power-Supply-Review/728

Well, almost, the model I got is PCAP A3, not PCAR A3 - I don't know what the 1 letter difference is.
Edited by dogbiscuit - 7/19/12 at 4:06pm
The Watt Gobbler
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The Watt Gobbler
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post #7 of 67
7/19/12 at 4:09pm
Look at the noise graphs. That's not a little dirty. That's toxic nasty.

A quality 500W PSU would be sufficient. On the cheap end a SeaSonic S12II 520W or Antec NEO 520C might do it. More expensively, Kingwin Golden King 550W would be awesome.
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post #8 of 67
7/19/12 at 4:14pm
Bad PSUs can either have poor voltage regulation, overheating problems, or just not be able to put out as much power as is stated.

Here's what can happen when you draw the maximum rated current from a terrible PSU:
My favorite was a PSU by Leadman that Johnnyguru reviewed; it was rated at 650W and died at 184.
Edited by Art Vanelay - 7/19/12 at 7:07pm
I still to buy more graphics cards
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post #9 of 67
7/19/12 at 5:28pm
I thought the wattage was 548-549w in the video?
Boinzy
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post #10 of 67
7/19/12 at 5:34pm
  • TwoCables
  • I love PSUs! I also love ASEA! (they're unrelated)

He is talking about a different video other than the one he posted.  That's why he said "was".

 

tongue.gif  smile.gif

It's like advanced alien technology! :)
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It's like advanced alien technology! :)
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Hard DriveHard DriveOptical DriveOptical Drive
60 GB Callisto Deluxe (C:) 64 GB G.SKILL Falcon (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (major overkill, but it was cheap) CM 690 Microsoft Intellimouse Optical Basic, but premium round 
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XtremeGamer (low-profile PCB) Altec Lansing VS4121 (2.1 speaker system) 
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