CPU

Finally, there’s the CPU, which is sort of the server’s brainpower.

It’s less quantifiable, for it is usually addressed as “cores”: 2 cores, 4 cores, 6 cores, and so on. There’s no clear way of telling how many cores your server needs to operate properly, there are a lot of impacting variables here.

Your hosting provider will provide good pairings with the RAM power. The higher the RAM, the more CPU is going to be needed to handle all this traffic, presumably.