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Questions about cheap PSU?

post #1 of 15
Thread Starter 
I'm going to be using my PC 24/7
It's a second PC used for buisness (My buisness involves running a demanding string of Java algorithms which stress CPU to 100% and Ram to around 6gb of 8gb Used) My current PC has similar specs and works great, PSU is what's been changed in this build

Specs;
AMD Phenom II X6 1090T @ 4.0GHZ Cooled on Air - Maxloads @ 52c
8GB DDR3 1333Mhz Generic Ram
880GM-UD2H - Cheap MB - I have added MOSFET heatsinks
Hyper 212 with 2x 68CFM Fans as exhaust, next to a 120mm exhaust.
NO GRAPHICS CARD - INTEGRATED.

According to the PSU calc I'll be using around 289w on a max load, all components @ 100%.
I was forced to cheap out on my PSU, it's a cruddy one which was included with the cheap case.

PSU;

Winpower AS-P550 - 550W PSU.
Input / Output
115VAC - +12V1 18A MAX
8A MAX. - +12V2 18A MAX
60ghz - +5v 28 MAX
230VAC - +3.3V 30A MAX
5A MAX - -12V 0.8A MAX
50Hz - +5V/SB 3.0A MAX


I'd like to know, will this hold up and power the system for 2 months or so before I upgrade the PSU?
How often to PSUs actually explode?
Will the fact it's 550w and I'm using 289w at max load mean it performs well?
Vulcan
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Vulcan
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Western Digital Green 1TB Windows 7 64 Bit 23" Samsung Syncmaster 650W Coolermaster 
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NZXT Vulcan 
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post #2 of 15
Quote:
+12V1 18A MAX
+12V2 18A MAX
...this gives 432W max on the +12V rails. Likely it can't come near those values, but you don't need to. Even if the PC would to pull only from the +12V rail it would still load the PSU at ~66%. Some W will go to the +5V and +3.3V, so the real load on the PSU would be even less.
In my opinion as long as you keep below 80% load, it should be fine. You could monitor +12V rail voltage and setup alarms in case it dips below 11.8V. If it stays above 11.8V, below 80% load and is reasonably well cooled it would work just fine for a few months or even years.
Centurion
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Centurion
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post #3 of 15
I'm not familiar with that PSU, but the PSU is one thing I generally won't cheap out on because it is connected to every other component and if things go bad, you can end up with more than just a blown PSU. What kind of budget do you have for your PSU, as there are some good ones out there that are fairly inexpensive?
    
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post #4 of 15
post #5 of 15
PSUs almost never "explode", because that's a liability, and no companies like that. If you mean how often do they die? No one can say for sure, although many will try, it depends on the specific actual unit, your usage and so on.

I've never heard of AS-P550, and can't find any info on it, however other "winpower" (by HEC?) units are referred to positively, so don't discount it just yet.

If you can find out the manufacturer that would tell a lot more, but for now I wouldn't stress too much about it. Run your system and keep backups and an eye open just in case, until you can either figure out exactly what your current PSU is, or upgrade to something you have more faith in.
Bleeding Edge
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Bleeding Edge
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post #6 of 15
Thread Starter 
Alright well I'll give it a go. It's probably only temporary and will be replaced in 3-4 weeks anyway.
Vulcan
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Vulcan
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Western Digital Green 1TB Windows 7 64 Bit 23" Samsung Syncmaster 650W Coolermaster 
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NZXT Vulcan 
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post #7 of 15
Quote:
Originally Posted by ocpokey View Post
PSUs almost never "explode", because that's a liability, and no companies like that. If you mean how often do they die? No one can say for sure, although many will try, it depends on the specific actual unit, your usage and so on.
Lots of crap PSUs explode. There's no liability if you're a tiny company in China and leave no contact information, especially if you fly by night every few months or so.
post #8 of 15
For a business running intensive work? Replace it sooner than later.

Let me guess... it has an AC selection switch on the back? Odds are that is more a 400w or less PSU using an ancient design.
Once again...
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Once again...
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Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
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post #9 of 15
You should've bought a cheap but great-quality PSU like this one:

http://www.newegg.com/Product/Produc...82E16817371033

You should be fine for a few months, though. After that, replace it as fast as you can. A PSU is one of the system components you should never skimp out on because it is what powers all your components, and if it fails, it may take them with it.
    
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Hard DriveOptical DriveOSMonitor
Seagate Momentus 7200.4 320GB LG GSA-T50N, HP dvd1170r Windows 7 Home Premium 64-bit HP W2207 22" (1680x1050) 
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post #10 of 15
Thread Starter 
Completely aware of the importance of the PSU. I paid $30 for the Case+PSU as my budget was extremely tight and I needed buisness up and running ASAP. Will be upgrading next week. Will the week of use pose a threat to my rig?
Vulcan
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1100T @ 4.1Ghz GA-880GM-UD2H GTX 460 8GB Corsair Vengenace 
Hard DriveOSMonitorPower
Western Digital Green 1TB Windows 7 64 Bit 23" Samsung Syncmaster 650W Coolermaster 
Case
NZXT Vulcan 
  hide details  
Reply
Vulcan
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X6 1100T @ 4.1Ghz GA-880GM-UD2H GTX 460 8GB Corsair Vengenace 
Hard DriveOSMonitorPower
Western Digital Green 1TB Windows 7 64 Bit 23" Samsung Syncmaster 650W Coolermaster 
Case
NZXT Vulcan 
  hide details  
Reply
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