Dell PowerEdge T605 Hardware Owner's Manual (PDF) - Page 127

System Memory You can upgrade your system memory to a maximum of 16 GB (for a oneprocessor configuration) or 32 GB (for a two-processor configuration). You can install 667-MHz registered parity DDR2 memory modules (DIMMs) in sets of 512-MB, 1-GB, 2-GB, or 4-GB modules. The memory sockets are located on the system board under the processor shroud and are split into two separate groups of four sockets each. Each four-socket group is adjacent to its respective processor. General Memory Module Installation Guidelines To ensure optimal performance of your system, observe the following guidelines when configuring your system memory. • Memory must be installed in configurations of two, four, or eight DIMMs. The minimum configuration for a two-processor system is four DIMMs. • DIMMs must be installed in matched pairs of identical speed, technology, and size in the following pairs of sockets: - DIMM A1 and DIMM A2 - DIMM A3 and DIMM A4 - DIMM B1 and DIMM B2 - DIMM B3 and DIMM B4 • Minimum configurations must occupy the lower-numbered sockets (DIMM A1 and DIMM A2 for a one-processor configuration and also DIMM B1 and DIMM B2 for a two-processor configuration). Table 3-1 shows the available memory configurations following these guidelines. Installing System Components 127