Amiga vs PC

[mongo]

So if computing power doubles every 18 months, and the A4000 was circa 1992, do you feel that your 2010 PC gives you the power of 2^12 (ie 4096) A4000's working at the same time?

Motorola 68040 ~ 27.5 MIPS at 25 MHz
Intel Core i7 Extreme Edition i980EE ~ 147,600 MIPS at 3.3 GHz

That's 5367 times the power of an A4000.

[mongo]

I've never seen a 68040 manage more than 1 instruction per cycle sustained. Of the 4 68040's I have at my disposal, none of them manage more than 0.8MIPS/MHz on the various benchmarking tools I've used. The 27.5MIPS figure looks far more like a 33MHz part to me. Which benchmark was this?

Freescale claims 44 MIPS @ 40 MHz. Who am I to argue?