Asus AT3N7A-I User Manual - Page 13

1.4.2 Memory configurations You may install 512MB, 1GB, and 2GB unbuffered non‑ECC DDR2 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 the 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 do any of the following: - Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS. - Install a 64-bit Windows® OS when you want to install 4GB memory on the motherboard. • When you install 4GB memory on the motherboard, the memory that the system can detect is less than 4GB. • This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less. This motherboard supports up to 4GB on Windows® XP Professional x64 and Windows® Vista x64 editions. You may install a maximum of 2GB DIMMs on each slot. AT3N7A-I Motherboard Qualified Vendors Lists (QVL) DDR2-667 MHz capability Size Vendor Part No. 2048MB A-Data 512MB Apacer 512MB Apacer 512MB Apacer 1024MB Apacer 1024MB Apacer 1024MB Apacer 2048MB Apacer 512MB Corsair 1024MB Corsair 2048MB(Kit of 2)G.SKILL M2OAD5H3J4170I1C53 78.91G92.9K5 AU 512E667C5KBGC AU 512E667C5KBGC 78.01G9O.9K5 AU01GE667C5KBGC AU01GE667C5KBGC 78.A1G9O.9K4 VS 512MB667D2 VS1GB667D2 F2-5400PHU2-2GBNT SS/ Chip DS Brand Chip NO. DIMM CL support A* B* DS ADATA AD20908A8A-3EG 30724 N/A • • SS Apacer AM4B5708JQJS7E0751C 5 •• SS Apacer AM4B5708GQJS7E06332F 5 •• SS Apacer AM4B5708MIJS7E0627B 5 • SS Apacer AM4B5808CQJS7E0751C 5 •• DS Apacer AM4B5708GQJS7E0636B N/A • • DS Apacer AM4B5708MIJS7E0627B 5 •• DS Apacer AM4B5808CQJS7E0749B 5 •• DS Corsair MIII0052532M8CEC N/A • • DS Corsair MID095D62864M8CEC N/A • • DS G.SKILL D2 64M8CCF 0815 C7173S 5-5-5-15 • • 1-4 Chapter 1: Product introduction