Acer G520 series manual Upgrading the system memory

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Upgrading the system memory

This section includes instructions for removing and installing a memory module.

The Server Boards Altos G520 each provides four DDR266 / DDR333 DIMM sites in two DIMM banks. The maximum memory capacity is 8GB for either DDR266 or DDR333 memory. Memory DIMM technologies supported are: 128MB, 256MB, 512MB, 1 GB and 2 GB.

The minimum memory configuration is one DIMM, installed in DIMM socket 1B (the socket farthest from the processors). However, for optimum performance and dual-channel interleave operation, a minimum of two DIMMs should be installed. DIMMs on channel A are paired with DIMMs on channel B to configure 2-way interleaving.

Both DIMMS in Bank 1 (DIMM1B and DIMM1A) must be populated before any DIMMs are installed in Bank 2 (DIMM2B and DIMM2A). Bank 2 must be populated in pairs.

Both DIMMs in a bank must be identical (same manufacturer, CAS latency, number of rows, columns and devices, timing parameters etc.). Although DIMMs within a bank must be identical, the BIOS supports various DIMM sizes and configurations allowing the banks of memory to be different.

Note: Dual-channel memory requires symmetrical memory modules using the same density (e.g. 256MB,512MB), bus width (e.g. x8 ,x16) and granule technology (e.g. 256M-bit, 512M-bit)

The mixing of DDR266 and DDR333 memory is supported on the Server Boards Altos G520. However, when mixing DIMM types, DDR333 will be treated as DDR266.

Warning! Functionality issues may be encountered if mixed memory types are installed on the same server board. DIMM modules of identical type, banking and stacking technology, and vendor should be installed in the Altos G520.