Finer grain cpu speed control for T40p (1.6)

T4x series specific matters only
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atanasoff
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Finer grain cpu speed control for T40p (1.6)

#1 Post by atanasoff » Tue Oct 19, 2010 12:41 pm

The standard speedstep settings don't offer an effective intermediate step. The options are Max, Adaptive, "Slow" and "very slow".

In practice I find that
Adaptive allows up to 1.6, which results in more heat/fan noise than I want
Slow sends it to 600mhz, with occassional increases to 800 but is not responsive - it often results in cpu flatlining at 100% yet stuck at 600mhz, making the machine useless
Very Slow is in practice similar to Slow.

What I want:
Either of the below would work:
i) and Adaptive scheme where I can set the max cpu speed below 1.6. 1.2 would probably do it, but I'd have to experiment
ii) a fixed speed I can choose

There's no setting in the existing controls to do either.
btw, I don't have experience as a developer, but I don't mind writing a line or two after reading the doc. But "just sketch this out in <some programming language>" isn't an option I'll be able to use.

Raceboy
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Re: Finer grain cpu speed control for T40p (1.6)

#2 Post by Raceboy » Tue Oct 19, 2010 1:30 pm

NHC allows you to get that and also undervolt your CPU to reduce heat dissipation, power consumption, fan comes on less time and thus better battery life.

And best of all, it's a freeware.
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atanasoff
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Re: Finer grain cpu speed control for T40p (1.6)

#3 Post by atanasoff » Tue Oct 19, 2010 3:14 pm

Raceboy wrote:NHC allows you to get that and also undervolt your CPU to reduce heat dissipation, power consumption, fan comes on less time and thus better battery life.

And best of all, it's a freeware.
Got it, downloaded nhc_2.0_pre_release_06_Bugfix.exe -- that's from 2007. That the best choice? (cpu is from the Bronze Age, or about 2004).

edit: It works, adjusted cpu max speed only, no problems yet!

tx for the tip

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