Re: Status of X86_P4_CLOCKMOD?

[Wes Felter]

Johannes Stezenbach wrote:

> If someone has done measurements I'd be interested to
> know the numbers about the actual power savings which
> can be achieved by using P4 clock mod. I don't expect
> it to be much, but I bet it's more than 1W.

Clock modulation can reduce power by 40W on a 3.6GHz Xeon when the 
system is running a high-power application (e.g. Linpack). (It also 
reduces performance by a factor of 6-10). Clock modulation saves no 
power at all during idle.

Wes Felter - wesley@xxxxxxxxxx

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