Asus M5A78L-M LX V2 - Manual (Page 22)

1.7.2 Memory configurations
You may install 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 DIMMs into the
DIMM sockets.
• 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, we
recommend 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 do any of the
following:
- Install a maximum of 3GB system memory if you are using a 32-bit Windows Install a maximum of 3GB system memory if you are using a 32-bit Windows ®
OS.
- Use a 64-bit Windows Windows ® OS if you want to install 4GB or more memory on the
motherboard.
• This motherboard does not support DIMMs made up of 512 megabits (Mb) chips or less.
M5A78L-M LX Series Motherboard Qualified Vendors Lists (QVL)
DDR3-1866(O.C.) MHz capability
Vendor Part No. Size SS/DS Brand Chip NO.
Timing
DIMM
(BIOS)
Voltage
DIMM Support
A* B*
Apacer 78.0AGCD.CDZ(XMP) 2048MB(Kit of 2) SS N/A Heat-Sink Package •
Corsair CM3X2G1800C8D 2048MB DS N/A Heat-Sink Package • •
Transcend TX1800KLU-2GK 1024MB SS N/A Heat-Sink Package • •
Vendor Part No. Size
SS/
DS Brand Chip NO.
Timing DIMM
(BIOS)
Voltage
DIMM
Support
A* B*
A-Data AD31600X002GMU 4096MB(Kit of 2) DS N/A Heat-Sink Package 7-7-7-20 1.75-1.85V • •
Corsair CM3X1G1600C9DHX 2048MB(Kit of 2) SS N/A Heat-Sink Package 9-9-9-24 1.8V • •
Corsair CM3X2G1600C9DHX 2048MB DS N/A Heat-Sink Package • •
Corsair TR3X6G1600C8 G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package • •
Corsair TR3X6G1600C8D G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 8-8-8-24 1.65V • •
Corsair TR3X6G1600C9 G(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package 9-9-9-24 1.65V • •
Corsair TR3X6G1600C8D G(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 1.65V • •
Crucial BL12864BA1608.8SFB(XMP) 3072MB(Kit of 3) SS N/A Heat-Sink Package 8-8-8-24 1.8V •
Crucial BL12864BE2009.8SFB3(EPP) 3072MB(Kit of 3) SS N/A Heat-Sink Package 9-9-9-28 2.0V • •
Crucial BL25664BN1608.16FF(XMP) 6144MB(Kit of 3 ) DS N/A Heat-Sink Package • •
Crucial BL25664TB1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 •
Crucial BL25664TG1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 • •
Crucial BL25664TR1608.K16SF(XMP) 6144MB(Kit of 3) DS N/A Heat-Sink Package 8-8-8-24 • •
DDR3-1600(O.C.) MHz capability
continued on the next page
Chapter 1: Product introduction 1-12