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laptop fan + energy savings under pure DOS (Miscellaneous)

posted by rr Homepage E-mail, Berlin, Germany, 23.04.2008, 09:43

> > I tried FDAPM and other idlers. No difference.
>
> There's now a
> Dec.
> 2007 version you could try. I think the resident option (APMDOS?) is
> suggested as best.
>
> Also, you could try
> Throttle.
>
> And finally, just for the record, I upgraded my BIOS on this laptop about
> two months ago, and it drastically changed the way the fan operates
> (intentionally). So, you may wish to try looking for such on your OEM's
> website, etc.
Thanks for caring, but it's useless to me. Sorry.
1) "fdapm apmdos" might cool down the CPU a bit, but it won't lower CPU speed, so fans always run at very conservative speeds. On Windows fans were also too loud, but I can use Notebook Hardware Control (NHC) to underclock the CPU to 600 MHz. Changing CPU clock requires an in-deep knowledge of ACPI. Eric showed some interest trying to implement such a DOS tool, but I was too busy to assist.
2) I already tried Throttle in the past.
3) Of course, I'm already using latest BIOS F.16 from 2005 for my Compaq Evo N620c.

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