Dell NX200 owner manual System Memory, General Memory Module Installation Guidelines

3Connect the system fan power cable to the system board.

4Replace the cooling shroud. See "Installing the Cooling Shroud" on page 83.

5Replace the expansion card stabilizer. See "Installing the Expansion Card Stabilizer" on page 81.

6Close the system. See "Closing the System" on page 80

7Lay the system upright on a flat surface.

8Reattach any peripherals and connect the system to an electrical outlet.

9Turn on the system and attached peripherals.

System Memory

Your system supports DDR3 unbuffered ECC DIMMs (UDIMMs). Single DIMMs can be 1333-MHz.Your system supports single-channel mode and dual-channel mode. The system contains a total of six memory sockets.

UDIMM supports single-rank DIMMs. The maximum memory that is supported on your system varies according to the types and sizes of memory modules being used: 1 GB and 2 GB UDIMMs are supported for a total of up to 12 GB.

General Memory Module Installation Guidelines

To ensure optimal performance of your system, observe the following general guidelines when configuring your system memory.

NOTE: Memory configurations that fail to observe these guidelines can prevent your system from starting and producing any video output.

•RDIMMs and UDIMMs cannot be mixed.

•Except for memory channels that are unused, all populated memory channels must have identical configurations.

•Memory modules of different sizes can be mixed in A1-A3 or B1-B3 (for example, 2-GB and 4-GB), but all populated channels must have identical configurations.

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Installing System Components