Is there a way to set the affinity setting for certain programs?

[michael775]

I play modern warfare 2 and it works best on two corers not 4 but I have to set it to use only to cores every time I start the game and I want windows to only allow it to run on core 3 & 4 only is this possible

 

[The_Prophecy]

Once the game is running, alt-tab out and open the Task manager. Go to the Processes tab and find the process for MW2. Right click on it and click Set Affinity.