Asus M5A78L-M LX BR M5A78L-M LX3 PLUS User's Manual - Page 21
Memory configurations
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1.5.2 Memory configurations You may install 1GB, 2GB, 4GB, and 8GB unbuffered 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 optimal compatibility, we recommend that you install memory modules of the same version or date code (D/C) from the same vendor. Check with the retailer to get the correct memory modules. • 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® 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 512Mb (64MB) chips or less. M5A78L-M LX3 Series Motherboard Qualified Vendors Lists (QVL) DDR3-1866MHz capability Vendors Part No. Size SS/ DS Chip Brand Chip NO. Timing Voltage DIMM socket support (Optional) 1 DIMM* 2 DIMMs* KINGSTON KHX1866C9D3T1K3/ 6GX(XMP) 6GB(3 x 2GB) DS - - - 1.65V • • OCZ OCZ3G1866LV4GK 4GB(2 x 2GB) DS - - 10-10-10-27 1.65V • • CORSAIR CMT4GX3M2A1866C9(XMP) 4GB(2 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMT6GX3MA1866C9(XMP) 6GB(3 x 2GB) DS - - 9-9-9-24 1.65V • • CORSAIR CMZ8GX3M2A1866C9(XMP) 8GB(2 x 4GB) DS - - 9-10-9-27 1.50V • • G.SKILL F3-14900CL9Q-8GBXL(XMP) 8GB(2GBx4) DS - - 9-9-9-24 1.6V • • ASUS M5A78L-M LX3 Series 1-11