Part 2 ~ Every CPU Core Count Explained In the early 2000s, every computer on the planet ran on a single core — one worker juggling every task so fast it felt like multitasking, but wasn't. Today, a single server chip packs 128 cores and 256 threads into one socket, powering the infrastructure behind the entire internet. Between those two extremes sits every tier of computing that matters. Twelve core counts broken down by what each one actually does, who needs it, and exactly where more cores s