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• The minimum system memory for UDIMMs is 2 GB (only one microprocessor installed and only one 2
GB UDIMM installed in the CPU1 DIMMA1 slot).
• The maximum system memory for RDIMMs or LV RDIMMs is 192 GB (two microprocessors installed and
one 16 GB RDIMM or LV RDIMM installed in each of the 12 memory slots).
• The maximum system memory for UDIMMs is 48 GB (two microprocessors installed and one 4 GB
UDIMM installed in each of the 12 memory slots).
For more information about the memory modules in your specic server model, use the Setup Utility
program. See “Viewing information in the Setup Utility program” on page 45.
For a list of the supported ThinkServer memory module options, go to:
http://www.lenovo.com/thinkserver
The following illustration shows the locations of all memory slots on a system board that has two
microprocessors (also known as CPUs) installed.
Figure 33. Memory slots on the system board
1 Memory slot (CPU1 DIMMA1) 7 Memory slot (CPU2 DIMMA1)
2 Memory slot (CPU1 DIMMA2) 8 Memory slot (CPU2 DIMMA2)
3 Memory slot (CPU1 DIMMB1) 9 Memory slot (CPU2 DIMMB1)
4 Memory slot (CPU1 DIMMB2) 10 Memory slot (CPU2 DIMMB2)
5 Memory slot (CPU1 DIMMC1) 11 Memory slot (CPU2 DIMMC1)
6 Memory slot (CPU1 DIMMC2) 12 Memory slot (CPU2 DIMMC2)
76 ThinkServer RD330 User Guide