@maschwab@... An IBM mainframe is not about the MIPS. They are best at crunching HUGE amounts of data quickly. The CPU's don't do I/O, they just crunch. PC architecture has they CPU's doing I/O, handling individual key presses, etc. All of which is fine on a single user machine, but not on a multi-user, heavily loaded machine. Mainframes are designed to run at 95% plus CPU loads (all the time), thousands of concurrent users, etc.
Even having a zOS emulator on a PC would not allow the PC to get anywhere near the business performance of a mainframe.
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