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Home > Archive > Linux Debian support > December 2007 > CPU underclocking?
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CPU underclocking?
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| Arne Schmitz 2007-12-08, 7:15 pm |
| I have an ASUS C90S laptop here, with a C2D 6600 CPU. I am already using
Speedstep, so that the CPU runs most of the time at 1.6 GHz. But I would
like to get it down even more. The BIOS does not allow me to set the clock
frequency or anything concerning the CPU. Are there any Linux utilities to
set the CPU clock? It would be nice e.g. to choose between 1, 1.6, 2.0 and
2.4 GHz, depending on what workload I currently have.
Arne
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| Anton Ertl 2007-12-08, 7:15 pm |
| Arne Schmitz <arne.schmitz@gmx.net> writes:
>I have an ASUS C90S laptop here, with a C2D 6600 CPU. I am already using
>Speedstep, so that the CPU runs most of the time at 1.6 GHz. But I would
>like to get it down even more. The BIOS does not allow me to set the clock
>frequency or anything concerning the CPU. Are there any Linux utilities to
>set the CPU clock? It would be nice e.g. to choose between 1, 1.6, 2.0 and
>2.4 GHz, depending on what workload I currently have.
You have the wrong CPU for that. 1.6GHz is the slowest that the Core
2 Duo E6600 goes with the standard FSB clock frequency; you could try
to set the FSB frequency lower if the BIOS supports that, but then you
cannot switch at run-time.
BTW, why are you using a laptop with a desktop CPU? I guess a laptop
CPU would offer more flexibility wrt clock speeds.
- anton
--
M. Anton Ertl Some things have to be seen to be believed
anton@mips.complang.tuwien.ac.at Most things have to be believed to be seen
http://www.complang.tuwien.ac.at/anton/home.html
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| Arne Schmitz 2007-12-08, 7:15 pm |
| Anton Ertl wrote:
> You have the wrong CPU for that. _1.6GHz is the slowest that the Core
> 2 Duo E6600 goes with the standard FSB clock frequency; you could try
> to set the FSB frequency lower if the BIOS supports that, but then you
> cannot switch at run-time.
Ok, too bad ASUS' Bios does not allow that...
> BTW, why are you using a laptop with a desktop CPU? _I guess a laptop
> CPU would offer more flexibility wrt clock speeds.
Yes... Let's say that we bought the wrong machine... I am not very happy
with that choice either...
Arne
--
[--- PGP key FD05BED7 --- http://www.root42.de/ ---]
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