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Does anyone know how, or if it's even possible, to disable Hyper-Threading on an Dell XPS L502x?

I've checked the BIOS, which seems like it's hiding a lot of the usual options, but can't see anything.

I've tried disabling Intel SpeedStep, which did nothing.

Thanks
Kieron

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  • Why disable it?
    – VenkatH
    Sep 11, 2012 at 13:42
  • Because the nature of the apps I run means I'd rather have them run with 25% of the available CPU than 12% (they're primarily single threaded for a lot of the operations).
    – Kieron
    Sep 11, 2012 at 14:16

3 Answers 3

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You can do that via a mod-ed BIOS, see this thread.

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It depends on your OS.

On FreeBSD sysctl machdep.hyperthreading_allowed=0 will disable it.

According to these similar posts on superuser it might be a bit harder on windows 7.

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check this modded bios it might solve your issues

http://forum.notebookreview.com/dell-xps-studio-xps/635536-l502x-modded-bioses-download-gpu-voltages-more.html

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