IBM 7947E3U, User Manual

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Installing a memory module
The following notes describe the types of dual inline memory modules (DIMMs) that
the server supports and other information that you must consider when you install
DIMMs.
v The server supports only industry-standard double-data-rate 3 (DDR3), 800,
1066, or 1333 MHz, PC3-10600R-999 (single-rank or dual-rank), registered,
synchronous dynamic random-access memory (SDRAM) dual inline memory
modules (DIMMs) with error correcting code (ECC). See http://www.ibm.com/
servers/eserver/serverproven/compat/us/ for a list of supported memory modules
for the server.
v
The server supports a maximum of 16 single-rank or dual-rank DIMMs.
v
The server supports three single-rank or dual-rank DIMMs per channel. The
following table shows an example of the maximum amount of memory that you
can install, using ranked DIMMs.
Table 9. Maximum memory installation using ranked DIMMs
Number of DIMMs Number of ranks DIMM size Total memory
16 Single rank 4 GB 64 GB
16 Dual rank 4 GB 64 GB
16 Dual rank 8 GB (if available) 128 GB
Chapter 2. Installing optional devices
83