Installing A Memory Module - Lenovo ThinkServer TD200x Hardware Maintenance Manual

Installing a memory module

The following notes describe the types of dual inline memory modules (DIMMs) that your server supports
and other information that you must consider when you install DIMMs.
1
Microprocessor 1
2
Microprocessor 2
• The server supports industry-standard double-data-rate 3 (DDR3), 800, 1066, or 1333 MHz,
PC3-10600R-999 (single-, dual-, or quad-rank), registered, synchronous dynamic random-access
memory (SDRAM) dual inline memory modules (DIMMs) with error correcting code (ECC). See
http://www.lenovo.com/thinkserver and click the Options tab for a list of supported memory modules for
the server.
• At least one DIMM must be installed for each installed microprocessor for the server to operate, but three
DIMMs per microprocessor improves server performance.
• When two microprocessors are installed in the server, distribute the DIMMs between the two
microprocessors to improve server performance.
• The server supports a maximum of 16 single-, dual-, or quad-rank DIMMs.
• The memory controller has three registered DIMM channels per microprocessor (Channels 0, 1, and 2).
Channels 0 and 1 support three DIMMs and Channel 2 supports two DIMMs.
• When installing DIMMs, install them starting with the connector farthest from the microprocessor within
each channel.
• When installing a quad-ranked DIMM in a channel with single- or dual-ranked DIMMs, install the
quad-ranked DIMM in the connector farthest from the microprocessor.
• The server supports 1 GB, 2 GB, and 4 GB DIMMs, with a minimum of 1 GB and a maximum of 64
GB of system memory.
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ThinkServer TD200x Hardware Maintenance Manual