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110 IBM ^ xSeries 440 Planning and Installation Guide
configuration rules, performance issues and potential licensing implications
related to Hyper-Threading before you proceed.
To enable Hyper-Threading on the x440, do the following:
1. Press F1 during system startup to enter the System Configuration Utility.
2. From the main menu, select Advanced Setup -> CPU Options. Figure 4-2
appears.
Figure 4-2 Enabling Hyper-Threading
3. Change the Hyper-Threading Technology setting to Enabled.
4. Exit the System Configuration Utility saving changes.
Eight-way systems: Hyper-Threading is disabled by default on the x440. This
is because of a known bug in Windows 2000 Advanced Server. If
Hyper-Threading is enabled on an eight-way server, then the Windows 2000
Advanced Server will trap (blue screen) during installation. This problem does
not affect other supported operating systems. You can enable
Hyper-Threading on an eight-way Advanced Server system after Service Pack
2 or later has been installed.
Windows 2000 Advanced Server supports a maximum eight processors.
There is no performance benefit to be gained from enabling Hyper-Threading
on an eight-way Advanced Server system.