Power supply Calculator

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Calculate your PSU needs

http://www.jscustompcs.com/power_supply /

Re: Power supply Calculator

Ian Ozenthroat wrote:
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looks to be about 9 months out of date.


Re: Power supply Calculator

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I don't see a dual core listed, for processor power.
You can get some data from www.amdcompare.com for that.
processorfinder.intel.com has plenty of data also.

For some of the newer video cards, you can get power
numbers from xbitlabs.com articles.

And your RAM numbers are still wrong. RAM effectively
has "busy" and "idle" power. In counting power, the
first DIMM on a channel is "busy". The second one
counts as "idle", because only one DIMM can be busy
at a time. (To be more accurate, one bank at a time.)
That means a simple-minded linear addition of power
(10/20/30/40W for 1/2/3/4 DIMMs) is unnecessarily high.

And as for style, I think the Takaman web site had the
right idea. It presented the estimate data in the form
of a spread sheet, showing +3.3V, +5V, +12V consumption
for each component in the computer. That helps enforce
the fact that the users should be checking the amperes
required on each rail. Instead of buying a "550W power
supply", they should look for 12V@15A or whatever the
results of the spreadsheet shows.

With the introduction of ATX 2.0+ supplies, there is
also a need to display the necessary power supply info,
as either a pre ATX 2.0 supply (with one 12V rail), or as
a 2.0+ supply (with two or more 12V rails). Since
both kinds of supplies are for sale, an estimator
should show the solution, in terms of both types.
(Easy to do, as you just show processor power for one
output, and the rest of the 12V loads for the second
12V output.)


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