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?