Hyper-Threading And Microsoft Windows Xp - Compaq Evo Workstation w6000 White Paper

Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper
After completing the preliminary steps, follow these steps to enable or disable the Hyper-
Threading technology on the Compaq Workstation W6000 and Workstation W8000:
1. Reboot the system.
2. When the screen appears with the red COMPAQ logo and the F10 prompt at the bottom of
the screen appears, press F10 to enter the setup mode. Once the system completes Power On
Self Test (POST), your system will go into setup mode.
3. When prompted for the language selection, select the appropriate language and press Enter.
4. Move to the Advanced Tab. Select Device Options and Enter.
5. Scroll to the Hyper-Threading option and use the left or right arrow key to toggle between
enable/disable.
6. Once the desired option is selected, press F10 to save that option and exit that window.
7. Press F10, press Enter, press F10 to save changes, and Exit.
The system saves your configuration and reboots.

Hyper-Threading and Microsoft Windows XP

If the Hyper-Threading technology option is enabled, verify that the change was made. With
Hyper-Threading enabled under Microsoft Windows XP, any physical CPU will be seen by the
OS as two logical CPUs.
1. Verify by opening the Task Manager.
2. Right-click on the task bar, and select Task Manager to bring up the Windows Task
Manager.
3. Under the Performance tab, you will see four CPUs in the Task Manager if your system has
two Physical CPUs and Hyper-Threading is enabled.
Figure 5 shows the Task Manager of a system that has two physical Processors with Hyper-
Threading enabled. Figure 6 shows the Task Manager of a system that has either one physical
processor with Hyper-Threading enabled or a system that has two physical processors with
Hyper-Threading disabled.
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