•When using only one memory module, start installing the DDR2 DIMM from slot DIMM_A1 or DIMM_B1 for better overclocking capability.

•For dual-channel configuration (2), you may:

-install identical DIMMs in all four sockets OR

-install identical DIMM pair in DIMM_A1 and DIMM_B1 (yellow sockets) and another identical DIMM pair in DIMM_A2 and DIMM_B2 (black sockets)

•Due to the chipset’s limitation, the 1066 MHz memory modules run at 1066 MHz only when:

-two 1066 MHz memory modules installed in the same colored-slots (either in the yellow slots or black slots); and

-one 1066 MHz memory module installed in any of the slots.

In other cases, the 1066 MHz memory modules can only run at 800 MHz.

• Always use identical DDR2 DIMM pairs for dual channel mode. For optimum compatibility, we recommend that you obtain memory modules from the same vendor.

• If you are using a Windows 32-bit version operating system (e.g. 32-bit Windows, 32-bit Vista) without the Physical Address Extension (PAE) support, the system will allocate a certain amount of memory space for system devices.

• We recommend that you install only a maximum of 3GB system memory when using a Windows 32-bit version operating system without the PAE. The excess over 3GB of installed memory will not cause any problem; however, the system can not use this excess memory space and the system will display less than the total size of physical memory installed.

The motherboard can support 8 GB physical memory on the operating system 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

ASUS M3N78-VM

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