Asus RS161-E4 PA2 User Guide - Page 26

Memory Configurations

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2.4.2 Memory Configurations You may install 256 MB, 512 MB, 1 GB, 2 GB, or 4 GB registered ECC DDR2 DIMMs into the DIMM sockets using the memory configurations in this section. • For dual-channel configuration, the total size of memory module(s) installed per channel must be the same for better performance. Single CPU: DIMM_A1=DIMM_A2=DIMM_B1=DIMM_B2 Dual CPU: DIMM_A1=DIMM_A2=DIMM_B1=DIMM_B2= DIMM_C1=DIMM_C2 =DIMM_D1=DIMM_D2 • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Recommended memory configuration for CPU1 Mode Single channel Dual channel DIMM_A1 - - populated DIMM_A2 populated populated populated DIMM_B1 - - populated DIMM_B2 - populated populated Recommended memory configuration for CPU2 Mode Single channel Dual channel DIMM_C1 - - populated DIMM_C2 populated populated populated DIMM_D1 - - populated DIMM_D2 - populated populated 2-10 Chapter 2: Hardware setup

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Chapter 2:
Hardware setup
2-10
2.4.2
Memory Configurations
You may install 256 MB, 512 MB, 1 GB, 2 GB, or 4 GB registered ECC DDR2
DIMMs into the DIMM sockets using the memory configurations in this
section.
For dual-channel configuration, the total size of memory module(s)
installed per channel must be the same for better performance.
Single CPU:
DIMM_A1=DIMM_A2=DIMM_B1=DIMM_B2
Dual CPU:
DIMM_A1=DIMM_A2=DIMM_B1=DIMM_B2=
DIMM_C1=DIMM_C2 =DIMM_D1=DIMM_D2
Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules
from the same vendor.
Mode
DIMM_A1
DIMM_A2
DIMM_B1
DIMM_B2
Single channel
populated
Dual channel
populated
populated
populated
populated
populated
populated
Recommended memory configuration for CPU1
Mode
DIMM_C1
DIMM_C2
DIMM_D1
DIMM_D2
Single channel
populated
Dual channel
populated
populated
populated
populated
populated
populated
Recommended memory configuration for CPU2