Consider the following scenario:

• You have a computer that uses a multicore processor. The number of the cores on a socket is not a power of 2. For example, the computer has a 6-core processor.
• You install an x86-based version of Windows Server 2008 or an x86-based version of Windows Vista on the computer.

In this scenario, you experience the following problems:

• When you check the number of processors in some user interfaces, such as in Task Manager, the number that is displayed is lower than the actual number.
• Performance of the computer is lower than expected.

Note: These problems occur only on an x86-based version of Windows Server 2008 and on an x86-based version of Windows Vista.