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From the article: "Keep in mind that these processors use different instruction sets (ISAs) so DMIPS are not directly comparable."

But DMIPS doesn't refer to million instructions per second, but to the relative performance for a standard benchmark relative to a VAX 11/780 (which is considered to run at 1 MIPS). So any differences in instruction sets are already accounted for.

http://en.wikipedia.org/wiki/Dhrystone

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You're assuming that that benchmark reflects real-world performance, but that assumption is not necessarily correct, especially given the age of the benchmark - I would be very surprised if the most commonly used instructions / etc have not shifted since 1988.

Also, the page you linked has a number of other concerns about said benchmark.

We are in violent agreement here. My point was just to note that the author apparently did not understand the difference between Dhrystone MIPS and "real" MIPS. He probably also did not understand that Dhrystone is an ancient benchmark that should not be used anymore.

But that's what you get when don't do your own benchmarks but copy/paste numbers from marketing material...

Yes, I think that he might not be familiar with how DMIPS works (or what it is).

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