2-7
Hardware Setup
Memory
DDR DIMM Slots
(DIMM 1~4, from left to right)
Channel A: DIMM1 & DIMM2 (green)
Channel B: DIMM3 & DIMM4 (purple)
The mainboard provides 4 slots for 184-pin, 2.5V DDR DIMM with 8
memory banks. You can install DDR266 / DDR333 / DDR400 / DDR433 / DDR466
/ DDR500 / DDR533 SDRAM modules on the DDR DIMM slots (DIMM 1~4).
To operate properly, at least one DIMM module must be installed. Please note
that DDR433 / DDR466 / DDR500 / DDR533 are for overclocking spec. (For
the list of qualified test memory modules, please refer to P.10 “Memory Mod-
ules” in the appendant Test Report.)
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-channel DDR DIMMs. However, the same type and density memory
modules are necessary while using dual-channel DDR, or instability may happen.
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