Alex, Usually the Compaq machines require matched pairs of CPUs (within
certain limitations). So, off the top of my head I'd say no this will not
work.

I'd just go to Ebay and pickup another 1 meg and keep the 256 for a spare.


Larry Wagar
Skagit Media Productions
(360) 854-0709
larry at skagitmedia dot com
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"Alexander Joelly" wrote in message
...
hi there,

i have an prolaint 850r with one ppro200 with 256kb cache installed;
can i run a ppro200 with 1mb cache in this machine?
the machine boots with the new cpu, but shows also only 256kb cache;

thanks for help,
alex