Stratcat wrote:

"Apollo" <REMOVEMEian_dunbar6@hotmailDOT.com> wrote in message
news:2n6p1oFrec8eU1@uni-berlin.de...

<snip>

I'm curious now, any idea what my cpu would consume; mobile XP2400
35W @
1.35v standard vcore - set at 1.93v.  There must be some
correlation, it can't be linear or it would only be around 50W and I
wouldn't need my wetware setup.

No, it's not linear,

But,

Yes, there is a simple correlation:

Power consumption/dissipation scales linearly with clock speed.
Power consumption/dissipation scales as the square of Vcore.

It's the added Vcore, that really produces the heat, as can be seen
from the mathematical relationship. Just ask any OC'er, and they'll
tell you things don't really start heating up 'till you crank up the
Vcore.

While there's a few other things going on, the linear clockspeed
and squared Vcore cover the major 'ball-park' basic components.

The equation would look something like this:

PWRoc = TDPstock * (FSBoc/FSBstock) * [(VCOREoc/VCOREstock)^2]

For your delta Vcore, this would be:

PWRoc = 35 (FSBratio) [(1.93/1.35)^2]
             = 35 (FSBratio) [(1.43)^2]
             = 35 (FSBratio) [2.045]
             =  71.575 (FSBratio)

Now, just multiply 71.575W by your (FSBoc/FSBstock) ratio.

You now have your new typical power dissipation for your OC'd chip.

You did not supply your FSB info, so I couldn't solve for it.

That's about it, except that TDP is just what it states: Thermal
Design Power. It's a design spec, not an exact measurement of a
specific chip, but rather of the typical power dissapation, as per
design specs.

It is what the chip manufacturer believes is the typical scenario for
use when using commercially available software. It is NOT the maximum
TDP, which is a calculated using the cpu's maximum core V & I values.

I honestly don't know if heavy DC use is considered typical, when
calculating TDP, but I'd suspect it's in the ballpark, possibly on the
very high end.

There's a few other heavier things going on, but this should get you
roughly in the ballpark.

BTW - That's a pretty hefty increase in Vcore. If I tried that with
one
my P4's, they wouldn't live the week, I'd suspect. ;-)

Go for it !

Good Luck

Wow! Check out the big brain on Stat!

;-)
--
~misfit~