How to Disable Hyperthreading

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Intel's Hyper-Threading Technology runs tasks simultaneously in different hardware threads. This raises the computing power in the chips that uses Hyper-Threading, such as Intel's Atom, Xeon, Pentium 4 and Core processors. Some older programs, however, offer no support for multi-threading, so Hyper-Threading offers no benefit when running them. Other older programs can't run on Hyper-Threading processors at all. To run these programs, disable Hyper-Threading through your computer's Basic Input/Output System (BIOS).

  • Restart your computer. Before the operating system loads, a splash screen will appear, typically with your manufacturer's logo. Instructions at the screen's bottom will state the key you must press to enter the BIOS. Depending on your computer, this may be, for instance, the F2, F8 or F10 key.

  • Press the key that the instructions mention. The BIOS will load.

  • Press the down-arrow key to select the "Hyper-Threading Technology" option.

  • Press "Enter." A blue menu will appear in the middle of the screen, offering just two options: "Disabled" or "Enabled."

  • Press the down-arrow until you have selected "Disabled."

  • Press the "Enter" key.

  • Press the "F10" key to save your changes, exit the BIOS and load your operating system.

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  • Photo Credit Thomas Northcut/Photodisc/Getty Images
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