HP ProLiant DL585 Server - Manual (Page 53)

Installing hardware options
4-2 HP ProLiant DL585 Server User Guide
Processor memory boards
The server supports up to four processor memory boards with AMD Opteron
processors.
CAUTION: Processor memory boards 1and 2 must always be installed. The system
will not boot if either board is missing.
CAUTION: Update the ROM to be sure that the system ROM recognizes the new
processor you are installing. For the most recent ROMPaq, refer to the HP website
and follow the support link on the product website.
Failure to flash the ROM before installing processor memory boards can cause
system failure.
IMPORTANT: Mixing processor speeds and cache sizes is not supported.
Processor memory board population guidelines
• All processors must be of the same speed and cache size.
• Processor memory boards 1 and 2 must always be installed.
• Processor memory boards 3 and 4 must be installed as a pair.