[mythtv-users] CPU power (was Possible small HD frontend)

[Raphael]

John Drescher wrote:
> What I do not see in this thread (the 7 responses I have today) is
> that usually by slowing the clock you can reduce the voltage of the
> processor by a considerable amount and this lowering of voltage will
> help reduce power by a considerable amount. Also I know for a fact
> that AMD systems (Opterons) will use considerably less power measured
> by a Kila-Whatt when at 1GHz at idle versus 2+ GHz idle. Also with
> cool+quiet on my idle temps are around 15 to 20C less than without. I
> am not talking about 1 system here I have dozens at work I have tested
> as well.
> 
> John

Well, one main reason for that is the actual voltage reduction on those 
opterons which you just referred to. I also know that reducing my clock 
on my old X2 3800+ did reduce the KW-hour usage. However, I didn't see a 
dramatic effect until I also lowered the voltage by 0.2V at the same 
time as the clock was reduced.

All I care about is the heat output though.