Asus P7Q57-M DO - Manual (Page 14)

1.4.2 Memory configurations
You may install 1GB, 2GB, and 4GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.
P7Q57-M DO Motherboard Qualified Vendors List (QVL)
DDR3-1333MHz capability
• 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.
• For dual-channel configuration, you can:
-
install two identical DIMMs in DIMM_A1 and DIMM_B1; or
- install four identical DIMMs in all four slots; or
- install one identical DIMM pair in DIMM_A1 and DIMM_B1 (blue slots) and
another identical DIMM pair in DIMM_A2 and DIMM_B2 (black slots).
• Due to the memory address limitation on the 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 do either of the
following:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows ®
OS.
- Use a 64-bit Windows ® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.
• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a lower
frequency than the vendor-marked value.
• For system stability, use a more efficient cooling system to support a full memory load (4
DIMMs) or overclocking conditions.
continued on the next page
Vendor Part No. Size
SS/
DS Chip Brand Chip No.
Timing
DIMM
(BIOS)
Voltage
DIMM
Support
A* B* C*
A-Data AD31333001GOU 1024MB SS A-Data AD30908C8D-151C E0906 - - • •
A-Data AD31333G001GOU 3072MB(Kit of 3) SS - - 8-8-8-24 1.65-1.85V • •
A-Data AD31333002GOU 2048MB DS A-Data AD30908C8D-151C E0903 - - • •
A-Data AD31333G002GMU 2048MB DS - - 8-8-8-24 1.65-1.85V • •
Apacer 78.A1GC6.9L1 2048MB DS APACER AM5D5808DEWSBG - - • •
CORSAIR CM3X1024-1333C9DHX 1024MB SS - - 9-9-9-24 1.60V • •
CORSAIR CM3X1024-1333C9 1024MB SS - - - - • •
CORSAIR TR3X3G1333C9 G 3072MB(Kit of 3) SS - - 9-9-9-24 1.50V • •
CORSAIR TR3X3G1333C9 G 3072MB(Kit of 3) SS - - 9-9-9-24 1.50V • •
CORSAIR TR3X3G1333C9 3072MB(Kit of 3) SS - - 9 1.5V • •
CORSAIR CM3X1024-1333C9DHX 1024MB DS Corsair - - - • •
Chapter 1: Product introduction 1-4