The earliest CMOS microprocessors (RCA 1802, HP Stirling RISC, et.al.) were slower than contemporaneous NMOS microprocessors and Bipolar logic computers. (IIRC, both the 1802 and the 6502 could be clocked at 1 MHz, but the 1802 required 8 cycles for the shortest instruction, much more than the 6502.)
When did commercially available CMOS microprocessors become faster than NMOS microprocessors? And when were CMOS IC based processors first used for computers fast enough to be on, or to top the Top-500 supercomputers list, outperforming computers based on bipolar logic (various CDC and Cray models, et.al.)?