The original Intel processors that kicked off the personal computing revolution was the 8086. It itself was a variation on earlier chips, the 8008 and 8080. It

The original Intel processors that kicked off the personal computing revolution was the 8086. It itself was a variation on earlier chips, the 8008 and 8080. It took off and spawned its own line, the 80168, 80286, etc. Eventually, the 80 was dropped and they became known as the 286, 386, 486. Even the Pentium processor was really a brand name for the 586. Every Core i7 is an x86.