On the Processes tab, right-click the process you want to assign, click Set Affinity, and then click one or more processors.
The Set Affinity command is available only on multiprocessor computers.
Using the Set Affinity command limits the execution of the program or process to the selected processors and might decrease overall performance.
Specify process counter column headings
Sort the list of processes
Change display options in Task Manager
Change the priority of a running program