Dell PowerEdge M420 Hardware Owner's Manual - Page 181

System Memory - PowerEdge M610/M610x Your system supports DDR3 registered DIMMs (RDIMMS) or unbuffered DIMMs (UDIMMs). Twelve memory sockets are located on the system board, allowing for the following maximum memory configurations: • 1 GB, 2 GB, 4 GB, 8 GB, and 16 GB RDIMMs (when available) are supported, for a total of up to 192 GB. Single-rank, dual-rank, and quadrank RDIMMs are supported. • 1 GB and 2 GB UDIMMs are supported, for a total of up to 24 GB. Figure 3-17. Memory Locations - PowerEdge M610/M610x A1 Channel 2 (A1, A4) A4 A2 A5 Channel 1 (A2, A5) A3 A6 Channel 0 (A3, A6) CPU1 CPU2 Channel 0 (B3, B6) B6 B3 Channel 1 (B2, B5) B5 B2 B4 Channel 2 (B1, B4) B1 General Memory Module Installation Guidelines - PowerEdge M610//M610x To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory: • RDIMMs and UDIMMs cannot be mixed. • Memory modules are populated beginning with the socket farthest from the processor (this socket is indicated by a white socket-release lever). Installing Blade Components 181