Memory; Introduction To Ddr Sdram - MSI 655 Max User Manual

The mainboard provides 4 slots for 184-pin, 2.5V DDR DIMM with 8
memory banks. You can install DDR200/PC1600, DDR266/PC2100 or
DDR333/PC2700 DDR SDRAM modules on the DDR DIMM slots (DIMM
1~4). To operate properly, at least one DIMM module must be installed.

Introduction to DDR SDRAM

DDR (Double Data Rate) SDRAM is similar to conventional SDRAM,
but doubles the rate by transferring data twice per cycle. It uses 2.5 volts as
opposed to 3.3 volts used in SDR SDRAM, and requires 184-pin DIMM mod-
ules rather than 168-pin DIMM modules used by SDR SDRAM. High memory
bandwidth makes DDR an ideal solution for high performance PC, worksta-
tions and servers.

Memory

DIMM4
DIMM3
Hardware Setup
DIMM1 & DIMM2
(from left to right)
2-7