Acer AT350 F1 User Manual - Page 68

56 3 System upgrades Mirroring mode • For mirroring mode, the memory contains a primary image and a copy of the primary image. Therefore, the effective size of the memory is reduced by at least one-half. • Channel 3 has no function and cannot be populated under this mode. • Follow the population rules described in independent mode. • DIMM modules installed in channels 1 and 2 must be identical - memory modules in slots 1A and 2A should be the same type, size and manufacturer. The same applies to slots 1B and 2B, 1C and 2C. However, it is not necessary for slot A to have the same memory module as slot B or C within a channel. • The same rule applies to the processor 2. Memory population for mirroring mode Single processor configuration Configuration A B C Channel 1 DIMM slots 1C 1B 1A X X X X X X Channel 2 DIMM slots 2C 2B 2A X X X X X X Channel 3 DIMM slots 3C 3B 3A NA NA NA NA NA NA NA NA NA Notes SR, DR RDIMMs only Notes: 1. Place DIMMs in "X" location. 2. DIMM population must correspond to the above tables. 3. DIMM modules support 1 GB, 2 GB and 4 GB DIMMs. 4. DIMM modules support 8 GB and 16 GB DIMMs (support depends on availability). 5. Do not mix UDIMMs with RDIMMs. 6. 3-DIMM per channel configuration is only available for single/dual rank RDIMM.