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Date: | Tue, 24 Mar 1998 17:40:51 -0800 |
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On 24 Mar 98 at 17:39, John Chin wrote:
> I have seen motherboards with dual voltage settings that are
> NOT P-55C compliant (MMX).
>
> "The MMX CPUs won't work," said a Shuttle Co. technician said
> of the older Spacewalker motherboards albeit with split voltage.
That's bizarre. The only non-MMX split-voltage CPUs I know of are
the IBM 6x86-L/Cyrix 6x86-GP (same chip, different label), and those
can't be all that common.
> If you do get the CPU to actually work, the MMX instruction set
> will likely NOT work. This is regardless of any BIOS upgrade.
Weirder and weirder. The only interaction I know of between BIOS
and MMX is whether the CPU type is correctly identified on the boot
screen.
> With the K-6 200 (MMX) just under $100 and decent P54C/55C
> motherboards starting at $70, it makes little sense to try this
> upgrade when the chances of success are nil. Sell your existing
> CPU/motherboard for $70 or more and upgrade the subsystem,
> and you will be ahead of the game.
True. In fact, if I were in the market for an MMX CPU, I'd be
looking for something at least a step above a 430FX to run it on.
David G
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