Asus M4N78 User Manual - Page 22

1.7.2 Memory configurations You may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC/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 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: - 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 or more memory on the motherboard. • This motherboard does not support DIMMs made up of 256 megabits (Mb) or less. The motherboard supports up to 16GB memory modules on Windows® XP Professional x64 and Vista x64 editions. You may install a maximum of 4 GB DIMMs on each slot. M4N78 Motherboard Qualified Vendors Lists (QVL) DDR2-667MHz capability Size Vendor Part No. SS/ DS CL 2G Kingston KVR667D2N5/2G DS N/A 512MB Kingston KVR667D2N5/512 SS N/A 2G Kingston KVR667D2N5/2G DS N/A 1G Kingston KVR667D2N5/1G DS N/A 512MB Qimonda HYS64T64000EU-3S-B2 SS 5 1G Qimonda HYS64T128020EU-3S-B2 DS 5 1G Corsair VS1GB667D2 DS N/A 1G Corsair XMS2-5400 DS 4 512MB Kingmax KLCC28F-A8KB5 SS N/A 1G Kingmax KLCD48F-A8KB5 DS N/A 512MB Apacer AU512E667C5KBGC SS 5 512MB Apacer AU512E667C5KBGC SS 5 512MB Apacer 78.91G92.9K5 SS 5 1G Apacer 78.01G9O.9K5 SS 5 1G Apacer AU01GE667C5KBGC DS N/A 1G Apacer AU01GE667C5KBGC DS 5 2G Apacer 78.A1G9O.9K4 DS 5 1G Transcend 506010-4894 DS 5 512MB ADATA M2OAD5G3H3160Q1C52 SS N/A 1G ADATA M2OAD5G314170Q1C58 DS N/A 2G ADATA M2OAD5H3J4170I1C53 DS N/A 512MB PSC AL6E8E63J-6E1 SS 5 1G PSC AL7E8E63J-6E1 DS 5 1G PSC AL7E8F73C-6E1 SS 5 512MB Nanya NT512T64U88A1BY-3C SS N/A Chip No. Chip Brand 7RE22 D9HNL Micron SO1237650821 SBP D6408TR4CGL25US L074905PECNB Kingston E1108ACBG-8E-E 0813A90CC Elpida SO1280420822 SOP D6408TR4CGL25US L156304PECXA Kingston HYB18T512B00B2F3SFSS28171 Qimonda HYB18T512B00B2F3SFSS28171 Qimonda MID095D62864M8CEC Corsair Heat-Sink Package Corsair KKEA88B4LAUG-29DX Kingmax KKEA88B4LAUG-29DX Kingmax AM4B5708MIJS7E0627B Apacer AM4B5708GQJS7E06332F Apacer AM4B5708JQJS7E0751C Apacer AM4B5808CQJS7E0751C Apacer AM4B5708GQJS7E0636B Apacer AM4B5708MIJS7E0627B Apacer AM4B5808CQJS7E0749B Apacer E5108AJBG-6E-E Elpida AD29608A8A-3EG20813 ADATA AD29608A8A-3EG80814 ADATA AD20908A8A-3EG 30724 ADATA A3R12E3JFF717B9A00 PSC A3R12E3JFF717B9A01 PSC A3R1GE3CFF734MAA0J PSC NT5TU64M8AE-3C Nanya DIMM socket support (Optional) A* B* C* · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· · ·· (continued on the next page) 1-12 ASUS M4N78