Acer Altos R710 manual Memory configurations for the DDR2 DIMMs

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DIMM	DIMM	DIMM	DIMM	DIMM	DIMM	Memory
1B	1A	2B	2A	3B	3A	Interleave
1GB	1GB	1GB	1GB	1GB	1GB	2-way
2GB	2GB	2GB	2GB	2GB	2GB	2-way

The minimum memory configuration is one DIMM, installed in DIMM 1B slot. However, for optimum performance and 2-way memory interleave operation, two DIMMs with identical size should be installed. DIMMs on memory channel A are paired with DIMMs on memory channel B to configure 2-way memory interleave.

Both DIMM 1B and 1A must be populated before any DIMMs are installed. DIMM 2B and DIMM 2A must be populated in pairs.

All DIMMs installed must be identical (same manufacturer, CAS latency, number of rows, columns and devices, timing parameters, etc.).

Warning! Functionality issues may be encountered if mixed memory types are installed on the same mainboard. DIMM modules of identical type, banking and stacking technology, and anufacturer should be installed in the Altos R710 system.

Memory configurations for the DDR2 DIMMs

The memory modules of identical type, banking, stacking and manufacturer must be installed and removed in the following order:

•DIMM 1B and DIMM 1A

•DIMM 2B and DIMM 2A

•DIMM 3B and DIMM 3A

Altos R710 includes Memory Sparing and Mirroring support. Thesefeatures prevent a single memory module failure to occur and result ina system crash.

Important: Four DIMM population of completely identical devices (two per channel) are required for memory mirroring and sparing functionality (i.e., DIMM 1A, 1B, 2A, and 2B must be identical) .