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Power Supply

Post Date: 2008-03-21
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sk8erstud813 View Drop Down
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  Quote sk8erstud813 Quote  Post ReplyReply bullet Topic: Power Supply
    Posted: 21 Mar 2008 at 3:02am
What is the real difference between a 550W and say a 620W power supply, or even more? I don't really know which one to get, please help!
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SunfighterLC View Drop Down
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Posts: 1527 		  Quote SunfighterLC Quote  Post ReplyReply bullet Posted: 21 Mar 2008 at 8:46am
http://educations.newegg.com/tool/psucalc/index.html
 
A very basic calculator, it should give you a generalized area to look for in what youre going to get power supply wise.
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bucephalusbaghdad View Drop Down
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Posts: 98 		  Quote bucephalusbaghdad Quote  Post ReplyReply bullet Posted: 21 Mar 2008 at 9:53pm
the real difference is how much power they are capable of pumping out, and your choice should be affected directly by how much power your components need. sunfighter's link is the easiest way of choosing i know of.
Intel Q6600 2.94ghz
Evga Nvidia 780i Core 2 Quad
2x 1gb DDR2 Dominator @1066mhz
2x GeForce 9600GT Superclocked
2x WD HDD 250gb 7200rpm's
850w ThermalTake PSU
Silverstone Windowed TJ09
SyncMaster 953BW
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Tyler Lowe View Drop Down
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Posts: 0 		  Quote Tyler Lowe Quote  Post ReplyReply bullet Posted: 21 Mar 2008 at 11:36pm
PSU Calculator Lite

When calculating for a PSU, I try to ensure the maximum system power draw will not exceed 75% of the PSU's rating. This should keep you within the PSU's highest efficiency range, and will help to ensure loner life from your power supply.
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SunfighterLC View Drop Down
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Posts: 1527 		  Quote SunfighterLC Quote  Post ReplyReply bullet Posted: 22 Mar 2008 at 10:41am

my power supply is a loner too. I suppose you want that though, cause having groups of them together will probably kill your power bill.

 
P.S your calculator is hard LOL.


Edited by SunfighterLC - 22 Mar 2008 at 10:46am
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sk8erstud813 View Drop Down
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  Quote sk8erstud813 Quote  Post ReplyReply bullet Posted: 23 Mar 2008 at 2:40am
Thanks for the replies guys
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Mifunego View Drop Down
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Posts: 34 		  Quote Mifunego Quote  Post ReplyReply bullet Posted: 25 Mar 2008 at 6:45pm
I was concerned about this too, and I did my calculations with the PSU Calculator Lite that Tyler recommended above and came up with a different number than the newegg calculator.  I also selected quite a few more cards/devices/drives than I currently have on my order.  In spite of all that, it still gave me a relatively low recommendation of 304 watts.  Then, calculating a peak performance level of 75% (again, as per Tyler's recommendation), I still end up right around a 400 watt PS, so it seems that the 550 I picked for my 750Si/650i/E8400/2GB1066MHz/9600GT/dual HD/dual OD system is more than enough.
I have to say, I'm digging this forum!


Edited by Mifunego - 25 Mar 2008 at 6:48pm
Bewheeled, in a demonic fashion.
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