IBM Power AC922 8335-GTW Handbook page 51

*8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, and 8335-GTX systems do not support mixing system
processors with different DDx.y levels, different speeds, or differing numbers of cores. To determine the
DDx.y level, type the following command and press Enter:
openbmctool -U <username> -P <password> -H <BMC IP address or BMC host name>
fru print
The DDx.y level is the CPU version number in the format xy. For example, a CPU with version number
"23" is DD2.3.
Finding parts and locations 37