We have several single-processor Ultra 45s. Is it possible to take the processor out of one of them and put it into another one, thus giving a dual-processor system? I can't find any documentation that explains if the CPU 0 is exactly the same as the CPU 1.
according to the Full Components List in the Sun System Handbook they are identical (527-1171 CPU, 371-0083 Fan/Heatsink).
Review chapter 3.2.1 in the Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual regarding DIMM Configuration Rules.