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> System 7 is an interesting beast in terms of the era it spans. On one end, we have the Mac Plus from 1986 with its 9" screen and 68000 @ 8 MHz. It can run System 7. And then there's 200 MHz PPC machines with PCI and Ethernet and 64 MB of RAM and all that, which can also run System 7.

System 7.5/7.6 have similar flexibility. It’d run on a lot of 68k Macs, and it’ll just as happily run on that 200Mhz PPC Mac you mentioned after it’s had a 400Mhz+ G3/G4 upgrade card installed (System 7 might able to do this too but I’m not certain). Of course this CPUs are bottlenecked by the bus speeds of that hardware, but the gap between the power available and power required without virtualization/emulation is kind of wild.




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