I always hear people in arguments about dual core vs quad core saying things like "Try to run a virus scan on one core, install a huge file on another core, browse the internet normally on another one" etc. And I'm just wondering, is there a way to designate what core to use? or will the computer automatically use a new core when one is being used to it's potential?
Windows will automatically swap tasks to and from different cores. You can manually do it to, go to Task Manager -> Processes -> right click -> set affinity.