Asus M3N78-VM - Manual (Page 27)

ASUS M3N78-VM 1-15
• 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 an 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.
• 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)
chips or less.
64-bit
Windows ® XP Professional x64 Edition
Windows ® Vista x64 Edition
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.