Memory Configurations - Asus P5QL-EM - Motherboard - Micro ATX User Manual

Mode
One DIMM
Two DIMMs
Three DIMMs
Four DIMMs
• When using only one memory module, start installing the DDR2 DIMM from slot
• For dual-channel configuration, you may:
• Always use identical DDR2 DIMM pairs for dual channel mode. For optimum
1.7.2

Memory configurations

You may install 256MB, 512MB, 1GB and 2GB unbuffered non-ECC DDR2 DIMMs into the
DIMM sockets.
• You may install varying memory sizes in Channel A and Channel B. The system maps
• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB
• Due to chipset limitation, this motherboard only supports up to the total of four ranks (four
• This motherboard does not support DIMMs made up of 256 megabit (Mb) chips or less.
1-12
DIMM_A1
DS/SS
-
-
-
DS/SS
DS/SS
-
-
SS
SS
DS/SS
-
SS
DIMM_A1 or DIMM_B1 for better overclocking capability.
- install identical DIMMs in all four sockets OR
- install identical DIMM pair in DIMM_A1 and DIMM_B1 (yellow sockets) and
another identical DIMM pair in DIMM_A2 and DIMM_B2 (black sockets)
compatibility, we recommend that you obtain memory modules from the same vendor.
the total size of the lower-sized channel for the dual-channel configuration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.
recommended that you obtain memory modules from the same vendor.
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you install a 64-bit
Windows OS when having 4GB or more memory installed on the motherboard.
sides in total) of RAM at max.
DIMM_A2 DIMM_B1
-
DS/SS
- DS/SS
-
- DS/SS
-
DS/SS DS/SS
DS/SS
SS DS/SS
SS
-
DS/SS
SS
DIMM_B2
- -
- -
-
- DS/SS
-
- DS/SS
-
- DS/SS
-
- DS/SS
SS SS
SS SS
SS SS
Chapter 1: Product introduction