Acer G320 Series manual Upgrading the system memory, Memory module installation guidelines

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Upgrading the system memory

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

Altos G320 has four DDR2-533/667 DIMM slots. Each slot supports 512 MB, 1 GB or 2 GB memory modules. The maximum memory capacity is 8 GB.

Memory module installation guidelines

•The minimum memory configuration is one DIMM, installed in the DIMM 1A socket (the socket closest to the the CPU sockets). However, for optimum performance and dual-channel interleave operation, a minimum of two identical DIMMs should be installed. DIMMs must be identical (same manufacturer, CAS latency, number of rows, columns and devices, timing parameters, etc.).

•DIMMs on channel A (DIMM 1A and 2A) are paired with DIMMs on channel B (DIMM 1B and 2B) to enable 2-way interleaving. When only two DIMMs are being used, the population order must be DIMM 1A and DIMM 1B to ensure dual-channel operating mode. Refer to the suggested DDR population table below.

DIMM label	Channel		Bank		Population order
DIMM 1A	A	1		1
DIMM 2A	A	1		3
DIMM 1B	B	2		2
DIMM 2B	B	2		4

Note: Refer to “Mainboard layout” on page 11 for the location of the DIMM sockets for each processor.

Warning! For best performance and dual-channel interleave operation, DIMM modules must be installed or removed in matched pairs, following the socket sequence: DIMM 1A and 1B first, then DIMM 2A and 2B. DIMM modules of the same type, banking, stacking technology, and manufacturer must be installed in the Altos G320 system.