Hyper-Threading And Microsoft Windows 2000 - Compaq Evo Workstation w6000 White Paper

Hyper-Threading Technology, New Feature of Intel Xeon Processor White Paper
Figure 5:
Figure 7 shows the Task Manager on a system that has only one processor with Hyper-Threading
disabled.
Figure 7:

Hyper-Threading and Microsoft Windows 2000

Microsoft Windows 2000 Professional Edition only supports up to a maximum of two processors.
The OS can only recognize two CPUs, even-though the system has two physical CPUs that
support Hyper-Threading and have Hyper-Threading enabled. The OS does not recognize the
case of one physical CPU with Hyper-threading enabled versus the case of two physical CPUs,
regardless of Hyper-Threading enabled or disabled. The Task Manager in Figure 8 reflects these
three cases. The first case with two logical CPUs will have less performance than the other two
cases. Figure 9 shows a single processor system with Hyper-Threading disabled.
167T-0202A-WWEN
Figure 6:
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