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MIPS is somewhat a inaccurate way to measure processor speed. For example the z80 can perform instructions that goes from only 4 T-States to 23! So what is MIPS? the 6502 range from 2 Clock Cycles to even 7! Plus they are heavily influenced by the clock frequency. Performance of a CPU cannot be measured barely by counting how many instructions can be processed per second. So TI's CPU can show a small MIPS value, but i do not think it is so slow as MIPS comparison say. Plus, even the clock speed is not a valuable way. Take for example the C64. It has a 6502 @ 1Mhz. Slow compared to Z80 @3Mhz. So one can think: "Why not increase 1Mhz to 3?" The 6502 with only 7 cycles in the worst case will outperform thhe z80! This is possible teoretically: But even 1 2Mhz 6502 could not be done on C64 because of the tightly coupling between VIC-II (that share memory with CPU) and CPU. When Commodore released the C128 they pushed the speed to 2Mhz but have to DISABLE the VIC-II and use another "VDP" similar to the TMS in the way it worked (no shared mem)