The Intel 8086, the foundation of the IBM PC, whose instruction set is still contained in all Intel x64 processors, had 29,000 transistors.
The current generation Intel 12900K has about 3,000,000,000 transistors.
Technically, the IBM PC and PC XT used the Intel 8088. I had one.
IIRC the Compaq desktop PC compatible used the 8086. That was the first machine I ran AutoCAD on back in the 80s for the engineering firm I worked for.
“The current generation Intel 12900K has about 3,000,000,000 transistors.”
The computer that I use the most is an i5-8400/ 16GB/ 512 NVME//// running Windows 11. So how many transistors for this i5?
The Motorola 68000 was highly superior in every respect. Motorola management flubbed the meeting with IBM.