Acer Altos R920 Series - Manual (Page 188)

Appendix B: Memory configuration 170
Memory mirroring population
The table below list the suggested FBDIMM module population for
memory mirroring configuration.
Population with four memory boards
DIMM
slot
Memory board
A
Memory board
B
Memory board
C
(Mirror)
Memory board
D
(Mirror)
Total memory
Physical
memory
Detected
by OS
1 to 2 2 x 1 GB 2 x 1 GB 2 x 1 GB 2 x 1 GB 8 GB 4 GB
1 to 4 4 x 1 GB 4 x 1 GB 4 x 1 GB 4 x 1 GB 16 GB 8 GB
1 to 6 6 x 1 GB 6 x 1 GB 6 x 1 GB 6 x 1 GB 24 GB 12 GB
1 to 8 8 x 1 GB 8 x 1 GB 8 x 1 GB 8 x 1 GB 32 GB 16 GB
1 to 2 2 x 2 GB 2 x 2 GB 2 x 2 GB 2 x 2 GB 16 GB 8 GB
1 to 4 4 x 2 GB 4 x 2 GB 4 x 2 GB 4 x 2 GB 32 GB 16 GB
1 to 6 6 x 2 GB 6 x 2 GB 6 x 2 GB 6 x 2 GB 48 GB 24 GB
1 to 8 8 x 2 GB 8 x 2 GB 8 x 2 GB 8 x 2 GB 64 GB 32 GB
1 to 2 2 x 4 GB 2 x 4 GB 2 x 4 GB 2 x 4 GB 32 GB 16 GB
1 to 4 4 x 4 GB 4 x 4 GB 4 x 4 GB 4 x 4 GB 64 GB 32 GB
1 to 6 6 x 4 GB 6 x 4 GB 6 x 4 GB 6 x 4 GB 96 GB 48 GB
1 to 8 8 x 4 GB 8 x 4 GB 8 x 4 GB 8 x 4 GB 128 GB 64 GB