Ive got my hands on a system that currently has one PII 450 in it. It is capable of supporting two processors. I believe it can go up to a PIII 600, but Im only interested in getting another PII 450. So my question is When putting in a second PII does the code on the CPU, for example SL2WB, have to be identical to the one that is already in the computer, in this case SL2U7?