CPU Power 0.21

mwolfman · 09-20-2005, 10:45 AM

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

bigben2k · 09-20-2005, 01:28 PM

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 · 09-20-2005, 03:00 PM

Thanx BB
Equals my block is a lot better

, 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...

And again thanx BB!

bigben2k · 09-20-2005, 03:09 PM

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/cont...docs/26237.PDF
(page 33).

redleader · 09-20-2005, 11:43 PM

Quote:

Originally Posted by 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

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 · 09-21-2005, 07:23 AM

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)…

09-20-2005, 10:45 AM	#1
mwolfman Cooling Savant Join Date: Jun 2004 Location: Sweden Posts: 152	CPU Power 0.21 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 __________________ Very old specs below, but I keep it for sentimental values :-/ Gigabyte GA-7N400 Pro2, Barton 2500@3200 -11201MHz, X800 XL , 1 GB Cosair 3200 (6-2-2-2) @400MHz in dual channel TurboBlock Rev. 1.0~0,15452756±0,004125251°C/W , HL120.3* with 3 Papst 4412@7volt , Hydor L30II

09-20-2005, 01:28 PM	#2
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	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. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

09-20-2005, 03:00 PM	#3
mwolfman Cooling Savant Join Date: Jun 2004 Location: Sweden Posts: 152	Thanx BB Equals my block is a lot better , 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... And again thanx BB! __________________ Very old specs below, but I keep it for sentimental values :-/ Gigabyte GA-7N400 Pro2, Barton 2500@3200 -11201MHz, X800 XL , 1 GB Cosair 3200 (6-2-2-2) @400MHz in dual channel TurboBlock Rev. 1.0~0,15452756±0,004125251°C/W , HL120.3* with 3 Papst 4412@7volt , Hydor L30II

09-20-2005, 03:09 PM	#4
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	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/cont...docs/26237.PDF (page 33). __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

09-21-2005, 07:23 AM	#6
mwolfman Cooling Savant Join Date: Jun 2004 Location: Sweden Posts: 152	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)… __________________ Very old specs below, but I keep it for sentimental values :-/ Gigabyte GA-7N400 Pro2, Barton 2500@3200 -11201MHz, X800 XL , 1 GB Cosair 3200 (6-2-2-2) @400MHz in dual channel TurboBlock Rev. 1.0~0,15452756±0,004125251°C/W , HL120.3* with 3 Papst 4412@7volt , Hydor L30II Last edited by mwolfman; 09-21-2005 at 07:39 AM.

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