Memory; Introduction To Ddr Sdram; Ddr Population Rules - MSI 865PE NEO2-LS - Motherboard - ATX User Manual

The mainboard provides 4 slots for 184-pin, 2.5V DDR DIMM with 8
memory banks. You can install DDR266/DDR333/DDR400 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 modules
rather than 168-pin DIMM modules used by SDR SDRAM. Please note that
the DDR SDRAM does not support ECC (error correcting code) and registered
DIMM.

DDR Population Rules

Install at least one DIMM module on the slots. Each DIMM slot supports
up to a maximum size of 1GB. Users can install either single- or double-sided
modules to meet their own needs. Please note that each DIMM can work
respectively for single-channel DDR, but there are some rules while using
dual-channel DDR (Please refer to the suggested DDR population table on p.
2-8).Users may install memory modules of different type and density on different-

Memory

BATT
+
(DDR 1~4, from left to right)
Channel A: DIMM1 & DIMM2
Channel B: DIMM3 & DIMM4
Hardware Setup
DDR DIMM Slots
2-7