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512K/256K cache on Pentium Pro

Posted on 1998-03-17
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Last Modified: 2010-04-12
I have a Pentium Pro machine. I bought it more than a year ago. It has a dual processor motherboard with only one processor mounted on it. I want to upgrade and want to place another processor. Now, I don't know whether the mounted processor has a 256K cache or 512K cache on-board. How do I find out this fact? Also, would it make a difference in speed to have one processor with 256K cache and the other with 512K cache?
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Question by:malika
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jhance earned 200 total points
ID: 1018664
When going to a dual processor configuration, both CPUs must be of the same type.  Intel says that for reliable operation, they must even be the same REV level.  More than likely, you have a 256K cache as the 512K cache models were used almost exclusively by multi-processor system builders.  They were always very expensive and hard to come by.  Take your chip out, get the REV letter off of the package and start hunting for one that's the same.
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by:malika
ID: 1018665
Thank you jhance.
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by:jhance
ID: 1018666
BTW, it may be hard to find another PPro of the same rev level as the one you already have.  You may need to sell yours and get two identical new ones.  It's more expensive but you'll save yourself hours of headaches from system crashes.
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