Memory Configurations - Asus M3A78-T User Manual

2.4.2

Memory configurations

You may install 512 MB, 1 GB, and 2 GB unbuffered ECC and non-ECC DDR2
DIMMs into the DIMM sockets.
Recommended Memory Configurations
Mode
Single-Channel
Dual-channel (1)
Dual-channel (2)
•
•
•
•
Due to OS limitation, this motherboard can only support up to 8 GB on the
operating systems listed below. You may install a maximum of 2 GB DIMMs on
each slot.
2-12
DIMM_A1
(yellow)
–
Populated
Populated
Populated
You may install varying memory sizes in Channel A and Channel B. The
system maps 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.
Always install DIMMs with the same CAS latency. For optimum
compatibility, it is recommended that you obtain memory modules from the
same vendor.
When installing a total memory of 4GB capacity or more, Windows 32-bit
operation system may only recognize less than 3GB. Hence, a total
installed memory of less than 3GB is recommended.
This motherboard does not support memory modules made up of 128 Mb
chips.
Windows
Windows
Sockets
DIMM_A2 DIMM_B1
(black) (yellow)
– Populated
– –
– Populated
Populated Populated
64-bit
XP Professional x64 Edition
®
Vista x64 Edition
®
Chapter 2: Hardware information
DIMM_B2
(black)
–
–
–
Populated