That's not highly parallelizable, that's only 2 task.
If those two tasks aren't themselves multithreaded (which they arn't if you're doing them in your browser) then you need at most 3 cores.
All the other background processes in your browser and OS are not using any significant CPU time, and can all comfortably share a fraction of a single core.
If those two tasks aren't themselves multithreaded (which they arn't if you're doing them in your browser) then you need at most 3 cores.
All the other background processes in your browser and OS are not using any significant CPU time, and can all comfortably share a fraction of a single core.