Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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

share|improve this question
    
Why disable it? – VenkatH Sep 11 '12 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 '12 at 14:16
up vote 1 down vote accepted

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

share|improve this answer

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.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .