@Zacharee1 One of the first proper Intel CPUs for PCs was the
8086 chip (16 bit) from 1978. Its successor was the 80186, then came 80286, then 80386 SX and 80386 DX, then 80486 and then they realized they can't have trademark rights on a number, so they called the 80586 Pentium ("penta"=5) instead.