Asus M3A78-T User Manual - Page 36
Memory configurations - windows 8
UPC - 610839164684
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2.4.2 Memory configurations You may install 512 MB, 1 GB, and 2 GB unbuffered ECC and non‑ECC DDR2 DIMMs into the DIMM sockets. Recommended Memory Configurations Mode Single-Channel Dual-channel (1) Dual-channel (2) DIMM_A1 (yellow) - Populated Populated Populated Sockets DIMM_A2 (black) DIMM_B1 (yellow) - Populated - - - Populated Populated Populated DIMM_B2 (black) - - - Populated • 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, it is recommended that you obtain memory modules from the same vendor. • When installing a total memory of 4GB capacity or more, Windows 32-bit operation system may only recognize less than 3GB. Hence, a total installed memory of less than 3GB is recommended. • This motherboard does not support memory modules made up of 128 Mb chips. Due to OS limitation, this motherboard can only support up to 8 GB on the operating systems listed below. You may install a maximum of 2 GB DIMMs on each slot. 64-bit Windows® XP Professional x64 Edition Windows® Vista x64 Edition 2-12 Chapter 2: Hardware information