Archived from groups: alt.comp.hardware.pc-homebuilt (
More info?)
Matt <matt@themattfella.zzzz.com> wrote:
>Matt wrote:
>> Tim wrote:
>>> What percentage of power, required by a modern CPU, is wasted by
>>> producing heat? (a 3GHz P4, for example) TIA
>>
>> The CPU's output is about two-thirds of its input.
>
>Yikes. I was thinking of the PSU.
lol
>I don't know that your question makes sense.
I agree, I think it's an abstract question in this context of
personal computer hardware CPUs, given the same PC type.
>I guess it would be easy enough to calculate watts/gigaflop, but
>that isn't quite what you asked for.
That sounds good to me. For simple logic devices, efficiency is the
result of physical type (for example CMOS versus whatever high-speed
logic).
I think there is a known CPU power efficiency difference between
notebook and desktop computers.
The difficult answer to the original poster's question might have
something to do with power input versus all of the output pins. But
who knows. That question would be for a manufacturer or an
electronics group, in my opinion.
Have fun.