Dell PowerEdge R905 Hardware Owner's Manual (PDF) - Page 95

Table 3-2. Examples of Four-Processor Memory Configurations (continued) Total System Memory Memory Modules - Number, Memory Module Locations Size and Speed 128 GB Sixteen 8 GB, 667 MHz A1, A2, A3, A4, B1, B2, B3, B4, C1, C2, C3, C4, D1, D2, D3, D4 128 GB Thirty-two 4 GB, 667 MHz A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8 192 GB Twenty-four 8 GB, 667 MHz A1, A2, A3, A4, A5, A6, B1, B2, B3, B4, B5, B6, C1, C2, C3, C4, C5, C6, D1, D2, D3, D4, D5, D6 256 GB Thirty-two 8 GB, 667 MHz A1, A2, A3, A4, A5, A6, A7, A8, B1, B2, B3, B4, B5, B6, B7, B8, C1, C2, C3, C4, C5, C6, C7, C8, D1, D2, D3, D4, D5, D6, D7, D8 * 2-GB 800 MHz and 4-GB 800 MHz memory modules will be supported when available 800-MHz memory modules are limited to a maximum of four modules per processor. If more than four modules are installed per processor, the system will downclock them to 667 MHz. Installing Memory Modules CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge. CAUTION: The memory modules are hot to the touch for some time after the system has been powered down. Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components on the memory module. 1 Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet. 2 Open the system. See "Opening the System" on page 65. 3 Remove the PEM (four-processor configurations) or PEM shell (twoprocessor configurations). See "Removing the PEM or PEM Shell" on page 73. Installing System Components 95