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SubjectRe: BogoMIPS revisitied...MMX
On Tue, 17 Mar 1998, Perry Harrington wrote:

> Ok, I wouldn't ask this question if I didn't think that there was
> more going on here.
>
> I have a P100 Toshiba laptop. It's your average P100 mobile 2.9v
> processor. I recently purchased a P233MMX as well.
>
> The thing that baffles me is this:
>
> I know that the bogomips loop is a >small< and tight loop of 3 or
> 4 instructions. Why is it that my P100 spits out something like
> 39.19 BogoMIPS and my P233MMX spits out 466.15 bogomips? I know
> that the Pentium had some issue with this, being that a standard
> 486 executed *that* particular loop faster.
An easy one: Branch predication. To put it even easier: The MMX core is
improved (and no, I'm not meaning the MMX named FPU rape *g*).

Andreas



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