You may also want to evaluate the 'setmul'[0] or 'cpuspd'[1] or 'throttle'[2] tools [3].
[0] https://www.vogons.org/viewtopic.php?t=38613 [1] https://www.vogons.org/viewtopic.php?t=74359 [2] http://www.oldskool.org/pc/throttle/DOS [3] https://www.vogons.org/viewtopic.php?t=44 On Thu, May 28, 2026 at 4:50 AM Rugxulo via Freedos-user <[email protected]> wrote: > > Hi, > > On Wed, May 27, 2026 at 1:56 PM Sabina Zelená. via Freedos-user > <[email protected]> wrote: > > > > I am using DOS(both,FreeDOS & MS-DOS) also on various semi-modern > > laptops,thin clients,etc.,mostly with Intel Atom CPU. > > FreeDOS 1.3? What kernel (version, e.g. "ver /r") and shell (FreeCOM? > version / size / date)? > Same for MS-DOS, which? 6.22? 4DOS 8? > > > I wish to lower CPU frequency,while in DOS(i have usually multiboots with > > Windows) to conserve power & reduce heat stress from CPU. > > I take it this is 64-bit Windows? Why not just run 32-bit Windows > which has NTVDM? (Or just use Linux with DOSEMU2.) Well, I'm not > realistically asking you to upgrade / purchase / reinstall. > > > It is nonsense to let run CPU @ 1.6GHz,while in DOS > > Maybe for word processing, yes, but not for other work. > > You might also benefit (save time) by using a RAM disk, software > cache, avoiding LFN drivers, defragging, etc. > > > i would wish to lower the frequency to 100MHz for DOS,i heard about CPU > > Throttle,is it stable/safe? > > Has some1 real experiences? > > Has it some dangers? > > Like they say, I don't think you can specifically go to 100 Mhz. It's > probably some greater fraction like 800 Mhz. > > For MS-DOS, it would be POWER utility , but for FreeDOS it's FDAPM. > > > What is the right configuration(ideally Config & Autoexec examples)? > > IDLEHALT should help, too. > > (But I don't know how you're measuring the times here. Just with a > manual stopwatch?) > > > For example my Intel Atom laptop Asus Eee PC 901 can run on battery for 4 > > hrs.,when running Windows 7 Super Lite,but when running > > DOS(regardless,which,i have both,MS-DOS 6.22 & FreeDOS 1.3 on it),battery > > is dead within 1.5hrs. > > & can it be also used in MS-DOS,or it is exclusively for FreeDOS? > > IDLEHALT is (almost certainly) exclusive to FreeDOS. > > N.B. I did once (in 2011) slow down my cpu to run a demo of an old > Borland Pascal 16-bit DPMI game via "fdapm.com speed3", but this > presumably relies upon ACPI. (The older APM is much less supported > nowadays. But even without either, your cpu may get some small > improvements with some FDAPM or POWER settings and/or IDLEHALT.) > > * https://help.fdos.org/en/hhstndrd/cnfigsys/idlehalt.htm > * https://help.fdos.org/en/hhstndrd/base/fdapm.htm > * https://www.easydos.com/power.html > > > _______________________________________________ > Freedos-user mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/freedos-user _______________________________________________ Freedos-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/freedos-user
