Yes, eZ80 is 1MIPS/MHz. I was trying to compare eZ8 to AVR which are similar from a cost and functionality perspective but differ in how fast they can execute code. As an interesting aside. if you go through the Parallax forums, you will find that a complete Z80 single board CP/M computer (Zicog) has been implemented on a single Propellor chip plus 512K SRAM, EEPROM and SD interface and available assembled for $40 USD. Apparently the same board can run other emulations as well.