There's also the Intel iAPX 432 "micro-mainframe" processor (1981) on two chips. (This was supposed to be Intel's flagship processor, but it was a disaster and

There's also the Intel iAPX 432 "micro-mainframe" processor (1981) on two chips. (This was supposed to be Intel's flagship processor, but it was a disaster and the 8086 took over instead. The NYT called it "one of the great disaster stories of modern computing".) I think that microprocessor manufacturers had mainframe envy in the 1980s.