If you have a multi-processor
system, it is possible to select which CPU(s) an application
uses.
Open Task Manager and select your application on the Processes
tab. Right click the program name and choose Set Affinity.
Uncheck the processors which should not run this application.
If you try to select a service, Set Affinity will be
ignored.
NOTE: see
tip 3542 » How can I permanently set the processor affinity for an application?