Acer Altos G330 Series - Manual (Page 59)

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• DIMMs on channel A (DIMM1A and 2A) are paired with DIMMs on
channel B (DIMM1B and 2B) to enable two-way interleaving.
When only two DIMMs are being used, the population order must
be DIMM1A and DIMM1B to ensure dual-channel operating mode.
• For best performance and dual-channel interleave operation,
DIMM modules must be installed or removed in matched pairs,
following the slot sequence: DIMM1A and 1B first, then DIMM2A
and 2B.
• Observe the population sequence illustrated in the table below
when installing a memory module.
• The table below lists the supported memory installation based on
the memory interleave configuration.
Memory channel DIMM slot Population order
A DIMM1A 1
A DIMM2A 3
B DIMM1B 2
B DIMM2B 4
Interleave
mode
Channel A Channel B
Total
memory
DIMM1A DIMM2A DIMM1B DIMM2B
Single
channel
512 MB 512 MB
1 GB 1 GB
2 GB 2 GB