>All the conventional PCI 7xxx (including 7500), 8xxx (including 8500) and 
>9xxx (including 9500) machines take 5 volt sticks.

[ snip ]

>So, these machines can accept an all 5 volt stick, a mixed 5/3.3 volt 
>stick (with regulators for the 3.3 volt chips) or an all 3.3 volt stick 
>(with regulators for all chips).

The 7200 had a provision for an on-mobo 3.3 volt regulator, so that 3.3 
volt *only* sticks could be used, but this feature was never implemented.


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