upgrade N4000 from 440 MHz to 750 MHz cpu

[Martha Mueller]

We have recently upgraded our N4000 from three 440 MHz cpu's to three 750 MHz cpu's, using the upgrade kit Product Number A6750A. As I understand it, the parts that were replaced during this upgrade were the core I/O board, the system board, the processor support module, and the cpu's. My collegue wants to know the differences between the old boards and the new boards. Anyone have any information?

Thanks

[Ken Hubnik_2 · Accepted solution]

The processor support module is basically the power supply to the cpu's. Since the cpu's are different so is the voltage requirments. The system board is different because of a different instruction set and a larger onboard cache. The believe that the I/O bus speed increases with the new cpu's also so that is probably why the I/O board was replaced.