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Old 06-19-2003, 11:25 AM   #31
balam
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Linux + help


Hi, I am getting ready t o take the linux + , I had study hard, I am taking test simulation , ( socks that all the test simulatlion are writen to run on windows, they should run on linux) but any way, I am using wine to emulate them. but My question is

DOES ANY BODY HAS A ADVICE OR DOCUMENTS (AKA: DUMPS) FOR THE LINUX +

thanks all
 
Old 06-19-2003, 08:15 PM   #32
Sabastian
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Quote:
Originally posted by geoff_f
Glad to be of help. In my case, my power supply was supposed to be a 400W one, but it could only handle 12A on the +12V line. I didn't realise the implications of that until I came across that link to the AMD paper.
hey how does this look for a new power supply...

iBest/Gold Brand
400W dual fan
+3.3V 28A
+5V 30A
+12V 25A
-5V 0.3A
-12V 0.8A
+5VSB 2A
 
Old 06-19-2003, 09:20 PM   #33
geoff_f
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It could be OK. If you look at AMD's example figures and round them up a bit for a little extra margin, then you get something like this:
Code:
Volts	Amps	Watts
+3.3V	8A	26.4
+5V	18A	90
+12V	16	192
Others		20
Which comes to 328.4W, well under 400W.

Now, most power supplies have a limit to how much power they can take off the +3.3V and +5V rails at the same time. A representative figure for a 'bargain' 400W power supply (which this one seems to be) for this limit would be 215W. The sundry voltage rails (-5V, -12V and +5VSB) take up about 20W. That leaves 165W (13.75A) for the +12V rail if the +3.3 and +5v are at their limit.

However, for the specific example above, the combined output for the +3.3V and +5V rails, (26.4 + 90) only comes to 116.4, so there seems to be a fair margin from 215W there. That means that the +12V rail will not be limited to 165W. In fact, it could expect to be able to draw 400 - (116.4 + 20) = 263.6W, which is within the 300W capacity that the figures you quoted suggest (12V x 25A = 300W). 263.6W is equal to 21.97A at 12V, so it should be able to supply 16A easily.

This all depends on the power supply meeting the specifications you quoted. The cheaper ones tend to be a bit optimistic about their capacities, so with a caveat on that sort of consideration, the power supply looks as if it could do the job. I could only find five hits on Google using 'ibest gold power supply 400W', so you couldn't say they are famous. Also, none of those hits gave any current output specs for the various voltages.

Last edited by geoff_f; 06-19-2003 at 09:23 PM.
 
Old 06-19-2003, 10:23 PM   #34
geoff_f
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I found a link to an 'iBest 400W' power supply, which shows only 11A on the +12V rail. See here:

http://www.cuttingedgecasemods.com/p...ibest400-4.htm

The 'iBest Gold 400W' may be a bit better, but it's not likely to be more than twice as good. Check the label on the side of the power supply before you buy it.
 
Old 06-19-2003, 11:10 PM   #35
Sabastian
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hmm.. alright.. i was trying to find one on ebay save myself a few bucks... i think ill go to the local store i go to for my computer parts and see what they have.. a bit more expensive but theyve never lied about any product.

ill let you know what they come up with for me.
 
  


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