Memory Configurations - Asus P5Q-EM DO User Manual

1.7.2

Memory configurations

You may install 512 MB, 1 GB, 2GB, and 4 GB unbuffered non-ECC DDR2 DIMMs into the
DIMM sockets.
•
•
•
•
•
Memory reserved by Intel
DIMM A1
Installed
Installed
Installed
Installed
Installed
Installed
Installed
Installed
1-14
P5Q-EM DO.indb 14
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.
Due to the memory address limitation on 32-bit Windows OS, when you install 4GB 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. .
This motherboard does not support memory modules made up of 256 megabit (Mb)
chips or less.
This motherboard supports Intel
memory size than that you installed when Intel
following table for details.
ME
®
Memory slots
DIMM A2 DIMM B1 DIMM B2
Installed
Installed
Installed
Installed
Installed
Installed
Installed Installed
Installed Installed
Installed Installed
Installed Installed
Installed Installed
Installed Installed Installed
Installed Installed
Installed Installed Installed
® ME technology. Your system may detects less
ME function is enabled. Refer to the
®
Total memory occupied by Intel
1GB / slot
16MB
16MB
0MB
0MB
16MB
32MB
32MB
32MB
0MB
32MB
32MB
32MB
32MB
32MB
64MB
Chapter 1: Product introduction
® ME
2GB / slot
16MB
16MB
0MB
0MB
64MB
64MB
64MB
64MB
0MB
64MB
64MB
64MB
64MB
64MB
64MB
12/9/08 12:33:42 PM