Guest jacksmith Posted June 24, 2008 Posted June 24, 2008 Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP home edition 2002. I'm wanting to turn off hyperthreading. In the device manager it lists two processors, obviously cause hyperthreading is on. Do I just disable one of the processers, and if so, presuming that I can, which one? Or is there another way?
Guest Patrick Keenan Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING "jacksmith" <dm1n1c@hotmail.com> wrote in message news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... > Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP > home edition 2002. I'm wanting to turn off hyperthreading. In the > device manager it lists two processors, obviously cause hyperthreading > is on. Do I just disable one of the processers, and if so, presuming > that I can, which one? Or is there another way? I'm not sure why you would want to disable hyperthreading, but... . You can't disable "one of the processors" because there is only one, with two cores. The OS version should be irrelevant to this, the controls should be in the BIOS advanced settings somewhere; where exactly will depend on the motherboard and its features. You might find a motherboard utility from the board maker that runs under XP that allows you to access to these controls. Or you can just power down and restart (often BIOS setup is not accessible on warm boot) and start looking. Looking in the motherboard manual is probably a good place to start, too. HTH -pk
Guest John John (MVP) Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING You have to disable it in the BIOS. John jacksmith wrote: > Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP > home edition 2002. I'm wanting to turn off hyperthreading. In the > device manager it lists two processors, obviously cause hyperthreading > is on. Do I just disable one of the processers, and if so, presuming > that I can, which one? Or is there another way?
Guest M.I.5¾ Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING "jacksmith" <dm1n1c@hotmail.com> wrote in message news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... > Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP > home edition 2002. I'm wanting to turn off hyperthreading. In the > device manager it lists two processors, obviously cause hyperthreading > is on. Do I just disable one of the processers, and if so, presuming > that I can, which one? Or is there another way? Just to satisfy the curious: why exactly do you want to do this?
Guest Mike Cawood, HND BIT Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING "jacksmith" <dm1n1c@hotmail.com> wrote in message news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... > Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP > home edition 2002. I'm wanting to turn off hyperthreading. In the > device manager it lists two processors, obviously cause hyperthreading > is on. Do I just disable one of the processers, and if so, presuming > that I can, which one? Or is there another way? Two processors are listed because your CPU has two cores. I am totally at a loss to understand what the problem is. Regards Mike.
Guest John John (MVP) Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING Mike Cawood, HND BIT wrote: > "jacksmith" <dm1n1c@hotmail.com> wrote in message > news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... > >>Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP >>home edition 2002. I'm wanting to turn off hyperthreading. In the >>device manager it lists two processors, obviously cause hyperthreading >>is on. Do I just disable one of the processers, and if so, presuming >>that I can, which one? Or is there another way? > > > Two processors are listed because your CPU has two cores. I am totally at a > loss to understand what the problem is. It doesn't have two cores if it is a simple hyper-threaded processor. John
Guest Richard Posted June 24, 2008 Posted June 24, 2008 Re: HOW TO TURN OFF HYPERTHREADING I read somewhere that in older programs not set up for it, it doesn't help and might even hurt performance. Is this correct? have it turned off in my Dell 3400 and it seems a bit faster. "M.I.5¾" <no.one@no.where.NO_SPAM.co.uk> wrote in message news:4860c575$1_1@glkas0286.greenlnk.net... > > "jacksmith" <dm1n1c@hotmail.com> wrote in message > news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... >> Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP >> home edition 2002. I'm wanting to turn off hyperthreading. In the >> device manager it lists two processors, obviously cause hyperthreading >> is on. Do I just disable one of the processers, and if so, presuming >> that I can, which one? Or is there another way? > > Just to satisfy the curious: why exactly do you want to do this? > >
Guest Ian D Posted June 25, 2008 Posted June 25, 2008 Re: HOW TO TURN OFF HYPERTHREADING "jacksmith" <dm1n1c@hotmail.com> wrote in message news:f8616692-35c8-4c5d-8223-9590794dee4c@w4g2000prd.googlegroups.com... > Hi everyone. I'm running an intel 2.6 with hypertheading. I'm using XP > home edition 2002. I'm wanting to turn off hyperthreading. In the > device manager it lists two processors, obviously cause hyperthreading > is on. Do I just disable one of the processers, and if so, presuming > that I can, which one? Or is there another way? Add /numproc=1 to the end of your boot.ini boot line. You could create a multi-boot to select HT on, or off, during boot. This can also be used to select the number of cores active for a multicore CPU.
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