System Memory; Dimm Sockets Location; Memory Configurations - Asus 1U Rackmount Barebone Server RS120-E3 (PA4) User Manual

2.3

System memory

2.3.1 2.3.1 2.3.1

DIMM sockets location

DIMM sockets location DIMM sockets location
2.3.1 2.3.1 DIMM sockets location DIMM sockets location
The system motherboard comes with four Double Data Rate II (DDR2) Dual
Inline Memory Modules (DIMM) sockets to support 240-pin DDR2 modules.
The figure illustrates the location of the DDR2 DIMM sockets:
®
P5MT-R
P5MT-R 240-pin DDR2 DIMM sockets
2.3.2 2.3.2 2.3.2

Memory configurations

Memory configurations Memory configurations
2.3.2 2.3.2 Memory configurations Memory configurations
You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered ECC or
non-ECC DDR2-533/667 DIMMs to the DIMM sockets.
• Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules
from the same vendor. Visit the ASUS website for an updated DDR2
Qualified Vendors List for this motherboard.
• Due to chipset resource allocation, and depending on the number of
expansion cards installed, the following conditions may occur:
- the system may detect less than 8 GB system memory when you
installed four 2 GB DDR2 memory modules
- may show an available memory space of less than 4 GB when
you installed four 1 GB DDR2 memory modules
• Three DDR2 DIMMs installed into any three memory sockets will function
in Dual channel asymmetric mode.
• When installing a single or two DIMMs, install the modules on the blue
slots (DIMM_A2/DIMM_B2). Refer to the recommended memory
configuration table below.
Recommended memory configurations Recommended memory configurations Recommended memory configurations Recommended memory configurations Recommended memory configurations
M o d e M o d e M o d e M o d e M o d e
Single channel (1)
(2)
Dual channel (1)
(2)
(3)
Dual channel (1)
(Asymmetric mode)
A S U S R S 1 2 0 - E 3 / P A 4 A S U S R S 1 2 0 - E 3 / P A 4 A S U S R S 1 2 0 - E 3 / P A 4 A S U S R S 1 2 0 - E 3 / P A 4 A S U S R S 1 2 0 - E 3 / P A 4
D I M M _ A 1 D I M M _ A 1 D I M M _ A 1 D I M M _ A 1 D I M M _ A 1 D I M M _ A 2 D I M M _ A 2 D I M M _ A 2 D I M M _ A 2 D I M M _ A 2
— populated
—
populated
— populated
populated populated
populated populated
D I M M _ B 1 D I M M _ B 1 D I M M _ B 1 D I M M _ B 1 D I M M _ B 1
—
— —
— populated
—
populated
—
D I M M _ B 2 D I M M _ B 2 D I M M _ B 2 D I M M _ B 2 D I M M _ B 2
—
populated
—
populated
populated
populated
2 - 9 2 - 9 2 - 9 2 - 9 2 - 9