Well here is a list of platforms you'd be looking at for the MIPS alone:
Nintendo 64: MIPS R4300i-based NEC VR4300 @ 93.75 MHz (link)
Playstation: R3000A-compatible (R3051) 32bit RISC chip running at 33.8688 MHz (link)
Playstation 2: MIPS R5900 CPU core, 64 bit (link)
Playstation Portable: MIPS R4000-based CPU 333MHz (was 222MHz) (link)
Tons more info for the MIPS is available here: Wikipedia Article on MIPS
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