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The mainboard provides 4 slots for 240-pin DDRII DIMM, which supports the
memory size up to 8GB.
Since DDRII modules are not interchangeable with DDR and the DDRII stand-
ard is not backward compatible, you should always install DDRII memory module in
the DDRII slot. Otherwise, you are not able to boot up your system and your mainboard
might be damaged.
For the updated supporting memory modules, please visit http://www.msi.
com.tw/program/products/mainboard/mbd/pro_mbd_trp_list.php.
Introduction to DDRII SDRAM
DDRII is a new technology of memory module, and its speed is the top limit of
current DDR technology. DDRII uses a 1.8V supply for core and I/O voltage, com-
pared to 2.5V for DDR, and requires 28% less power than DDR chips. DDRII truly is
the future of memory, but will require some changes as the technology is not back-
wardly compatible and only motherboards specifically designed for DDRII memory
will be able to support these chips.
DDRII incorporates new features at the chip level that give it better signal
integrity, thereby enabling higher clock speeds.
DDRII modules have 240 pins, versus 184 pins on a DDR module, and the
length of DDRII module is 5.25". DDR2 modules have smaller and tighter spaced pins.
The height of DDRII modules varies, but they will typically be less than 1.3" in height.
Memory Module Population Rules
Install at least one DIMM module on the slots. Each DIMM slot supports up to a
maximum size of 2GB. Users can install either single- or double-sided modules to
meet their own needs. Please note that each DIM M can work respectively for
single-channel DDR, while both channels (in different color) populated
with same amount of memory size will work as dual-channel DDR.
Memory
DIMM1~DIMM4
(from left (Greem) to right(Orange))
Channel A (DIMM1 & DIMM2): Green
Channel B (DIMM3 & DIMM4): Orange
Hardware Setup
2-7
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