CPU Power 0.21

[mwolfman]

I'v tested CPU Power 0.21 and when Sandra reports 83 Watt load at load (BurnIn, Sandra) CPU Power reports between 95,1-98,7 Watt

So what is it?
A Barton 2500: 2203 MHz, 200 FSB, vcore 1.81 (max)

Info about CPU-power can be found here, translated (http://translate.google.com/translate?hl=en&sl=fr&u=http://www.pcsilencieux.com/article-32.html&prev=/search%3Fq%3D%2522CPU%2BPower%2522%2B0.21%26num%3D 100%26hl%3Den%26lr%3D%26rls%3DGGLG,GGLG:2005-31,GGLG:en)

[bigben2k]

Apparently, it's accurate to "less than 5%".

The 2500+ running at stock parameters (according to AMD document 26237):
VCore: 1.65
FSB: 333 (167)
MHz1833

...puts out 53.7 W, with a max of 68.3W.

Makeing some (very quick) calculations, 95 Watts would be about right.

[mwolfman]

Thanx BB
Equals my block is a lot better :D , and my simuations is with in 3% from my actual readings...
And Sandra sucks...
I wasted loads of houres (read days) to figure out what part of the simulations and the construction that dident match... :mad:

And again thanx BB!

[bigben2k]

No prob.

Looks like Sandra is running an average between "typical" and "max". My (rough) calculations are for "max". Otherwise I calculate 75 Watts for "typical" (still, very, very rough).

Here's AMD's PDF:
http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/26237.PDF
(page 33).

[redleader]

I'v tested CPU Power 0.21 and when Sandra reports 83 Watt load at load (BurnIn, Sandra) CPU Power reports between 95,1-98,7 Watt

So what is it?
A Barton 2500: 2203 MHz, 200 FSB, vcore 1.81 (max)

Info about CPU-power can be found here, translated (http://translate.google.com/translate?hl=en&sl=fr&u=http://www.pcsilencieux.com/article-32.html&prev=/search%3Fq%3D%2522CPU%2BPower%2522%2B0.21%26num%3D 100%26hl%3Den%26lr%3D%26rls%3DGGLG,GGLG:2005-31,GGLG:en)

I'd be amazed if that consistantly within 50%. I don't know of anyone outside of AMD/Intel/IBM that can measure CPU power within 5%.

[mwolfman]

Ok, I think I’ve figured out the programs (CPU Power) calculations:

From the AMD-table
(P/MHz)/V^2=I/V/MHz=X

(X)*OC MHz*(OC V)^2=OC TP

But, I believe that the same X should be used for the “typical” thermal power (that’s the same as the writer of the program think).
If I use the same X, then my temp readings together with my °C/W (both simulated and tested) match up…

If I use the second value (the typical thermal power) then my °C/W and temps differ with 26,4 %, and I don’t find that very logical (even if my blocks °C/W isn’t liner with W (the °C/W gets better with higher watts), due to geometrical reasons)…