Just a list of CPUs and their speeds.
Motorola 68030 @ 16 MHz, Motorola 56001 @ 32 MHz.
Motorola 68EC020 at 14.32 MHz (NTSC) or 14.18 MHz (PAL).
Motorola 68000 @ 7.16 MHz (NTSC) 7.09 MHz (PAL).
Atari ST/STE/Mega ST
Motorola 68000 @ 8MHz.
Zilog Z80B @ 6 MHz.
Amstrad CPC 464/664/6128
Zilog Z80 @ 4MHz.
Z80A (or equivalent) @ 3.5 MHz.
MOS Technology 6510/8500 @ 1.023 MHz (NTSC version) @ 0.985 MHz (PAL version).
In 1985, MOS produced the 8500, an HMOS version of the 6510.
The 8500 was originally designed for use in the modernised C64, the C64C. However, in 1985, limited quantities of 8500s were found on older NMOS-based C64s.
2 MHz MOS Technology 6502/6512.
Synertek SY6502A clocked at 2MHz when accessing ROM and 1 MHz when accessing RAM.
Atari 8-bit family
MOS Technology 6502B @ 1.79 MHz (NTSC) @ 1.77 MHz (PAL).
MOS Technology 6502 @ 1.023 MHz.
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