Lenovo ThinkServer RD330 (English) Installation and User Guide - Page 89

UDIMM with the same rank, voltage, and frequency.

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The following table explains the memory module installation rules for servers that have only one microprocessor (CPU1) installed. The "X" mark indicates the memory slot(s) into which the memory module(s) should be installed in different situations. Note: All memory modules to be installed on a server must be the same type (LV RDIMM, RDIMM, or UDIMM) with the same rank, voltage, and frequency. Figure 34. CPU1 DIMMs Table 4. Memory module installation rules for servers with one microprocessor CPU1 DIMM A1 A2 B1 B2 C1 C2 One DIMM X Two DIMMs X X Three DIMMs X X X Four DIMMs X X X X Six DIMMs X X X X X X Chapter 6. Installing, removing, or replacing hardware 77

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The following table explains the memory module installation rules for servers that have only one
microprocessor (CPU1) installed. The “X” mark indicates the memory slot(s) into which the memory
module(s) should be installed in different situations.
Note:
All memory modules to be installed on a server must be the same type (LV RDIMM, RDIMM, or
UDIMM) with the same rank, voltage, and frequency.
Figure 34. CPU1 DIMMs
Table 4. Memory module installation rules for servers with one microprocessor
CPU1 DIMM
A1
A2
B1
B2
C1
C2
One DIMM
X
Two DIMMs
X
X
Three DIMMs
X
X
X
Four DIMMs
X
X
X
X
Six DIMMs
X
X
X
X
X
X
Chapter 6
.
Installing, removing, or replacing hardware
77