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From: Dave Hardenbrook on 21 Apr 2008 21:41
Hello,

What wattage on a system's Power Supply is required for a video card
such as ATI Radeon 9000 series?

Thanks,

Dave
From: Paul on 21 Apr 2008 22:14
Dave Hardenbrook wrote:
> Hello,
>
> What wattage on a system's Power Supply is required for a video card
> such as ATI Radeon 9000 series?
>
> Thanks,
>
> Dave

Power estimates can come from a variety of sources, but there may be
an era of cards for which you won't find good estimates or measurements.

For recent stuff, Xbitlabs has outfitted some motherboards with current
shunts. Using their search engine, you can hunt for articles where they
include DC power measurements. For example, you'd use "8600 GTS power"
and select "All words", to try to find an article on the Xbitlabs.com
site where a power measurement was done.

http://www.xbitlabs.com/search

http://www.xbitlabs.com/articles/video/display/geforce8600gts_7.html

This site has a few numbers posted with the cards they have in their
database. It is unclear where the numbers have come from. They
don't seem to be too inflated (engineers like to quote some kind
of "worst case" value, which is likely a little too high to
be useful).

http://www.gpureview.com/show_cards.php?card1=512&card2=

The Xbitlabs measurement was 47 watts, and the GPUreview number
quoted is 71 watts, to give you some idea how they vary.

The oldest power numbers I've got, are part of the Takaman
power estimation web site. Takaman.jp shut down a few years
back, so I use an archived copy. Apparently, they got their power
numbers, from someone who prepared a "report" based on measuring
some number of cards. As far as I know, Takaman didn't do the
measurements, and is quoting numbers from the report they got.

(Use the VGA AGP field, select a card, read out the adjacent spreadsheet values.
Tool works in Firefox right now. The spreadsheet thing didn't work
equally well with all browsers.)

http://web.archive.org/web/20040411032947/http://www.takaman.jp/psu_calc.html?english

You could use the Radeon 8500 LE numbers, as an estimate for the 9000,
with the 9000 likely being lower power than the 8500 LE. The
Takaman result for the 8500 LE is about 35 watts. The 9000
is likely a bit less.

http://www.gpureview.com/show_cards.php?card1=65&card2=23

HTH,
Paul
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