>> Can anyone tell me what the voltage of the ram in a 9500 is? (3.3V or 5?)
>> I was given some and wanted to try it in a 6400, 5500, and a 7500.
>
>Goto <http://www.chipmunk.nl/DRAM/DRAM.htm>

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

Some or all of the chips themselves are often 3.3 volt, but even 3.3 volt 
chips have 5 volt I/O pins; it is internally, in their "core" that they 
are 3.3 volts.

For those sticks which employ 3.3 volt chips, there is/are one or more 
3.3 volt voltage regulators on those sticks. Usually sited at the corners 
of the sticks.

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).

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