2.4.2Memory configurations

You may install 512 MB, 1 GB, 2 GB and 4GB unbuffered and non‑ECC DDR2 DIMMs or 1 GB, 2 GB and 4GB unbuffered 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.

•For DDR2, it is recommended to install the memory modules from the black slots for better overclocking capability. For DDR3, only install the memory modules in the orange slots.

•Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor.

•This motherboard does not support memory modules made up of 128 Mb chips.

For DDR2 DIMMs:

• If you install two 2 GB or four 1 GB memory modules, the system may only recognize less than 3 GB because the address space is reserved for other critical functions. This limitation appears on Windows® XP/Vista 32-bit operation system which does not support Physical Address Extension (PAE).

•If you install Windows® XP/Vista 32-bit operation system, a total memory of less than 3GB is recommended.

•Due to chipset limitation, this motherboard can only support up to 16 GB on the operating systems listed below. You may install a maximum of 4 GB DIMMs on each slot.

64-bit

Windows® XP Professional x64 Edition

Windows® Vista x64 Edition

•The default memory operation frequency is dependent on its SPD. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor- marked or at a higher frequency, see section 3.4 Ai Tweaker menu for manual memory frequency adjustment.

•The memory modules may require a better cooling system to work stably under full loading (4 DIMMs) or overclocking setting.

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Chapter 2: Hardware information