A modern x86 CPU built out of TTL logic would be huge, slow and use lots of power. Comparing number of transistors: - 6502: 3500 transistors[1] - Intel Core i

A modern x86 CPU built out of TTL logic would be huge, slow and use lots of power. Comparing number of transistors: - 6502: 3500 transistors[1] - Intel Core i3: 382 million transistors,[2] or roughly 191 million transistors per core. So a single core of a modern x86 processor built with TTL would have 55,000 times the number of chips of a TTL 6502. Most people wouldn't have the space, power or cooling capacity to run that. Also, it would be much slower than a single chip x86 CPU, since it takes time for signals to travel between discrete chips, due to having to drive the capacitative loads of the I/O pins (and traverse a much larger distance). There's no way that TTL could run at gigahertz clock rates. The only reason why a 6502 made of TTL can be faster than a real 6502 is that the 6502 was a very slow processor. Its clock speed was only 1 - 3 megahertz.[1] [1] https://en.wikipedia.org/wiki/MOS_Technology_6502 https://en.wikipedia.org/wiki/MOS_Technology_6502 [2] https://en.wikipedia.org/wiki/List_of_Intel_Core_i3_microprocessors https://en.wikipedia.org/wiki/List_of_Intel_Core_i3_micropro...