> Oddness. Is it all on that same via chipset? (I have seen some reports of
> the same chipset working on other mobos.)
Variants of the VIA chipset. But I have reports of works/not working from
the same board even.
> Is there a way to enable everything-K7-except-MMX? (Or, for that matter,
> an easy way to see what K7 does that K6 doesn't.)
K7 optimisation basically enabled the MMX copy/clear code which adds 30-40%
performance to those functions. It also materially ups the maximum memory
bandwidth the processor will use which may be where the fun starts.
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