How to run my cou at lower freq

[Santanu Chatterjee]

Hi Everybody,

Is there some way in Ubuntu (and Linux in general) which
will enable me to run my CPU at a somewhat lower frequency
than the normal one?  I have an Intel i815 based motherboard
which does not have any option to change the CPU freq. from
the BIOS. I need my CPU to run at say 1GHz instead of 1.8GHz.

I need to do this since I am having some problems
with the motherboard shutting down my system suddenly since the
CPU is getting overheated. (I got this checked and this does not
seem to be a problem with the CPU fan)

Thanks in advance for any help.

Regards,
Santanu