MSI K7D Master-L, User Manual

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2-7
Hardware Setup
The mainboard provides 4 sockets for 184-pin, 2.5V DDR DIMM with 8
memory banks. To operate properly, at least one DIMM module must be installed.
Memory Installation
You can install PC1600/PC2100 DDR SDRAM modules on the DDR DIMM
slots (DDR 1~4).
DDR (Double Data Rate) SDRAM is similar to conventional SDRAM,
but doubles the rate by transfering data twice per cycle. It transfers data on
both the rising and falling edges of the clock. Conventional SDRAM only uses
the rising edge of the clock to transfer data. Therefore, conventional SDRAM
is called SDR (Single Data Rate) SDRAM.
DDR SDRAM 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. DDR SDRAM is also known as SDRAM-II,
DDR DRAM and DSDRAM (Double-Speed DRAM).
Two types of DDR are available at the time of writing: PC1600 & PC2100.
PC1600 DDR SDRAM running at 100MHz will produce about 1.6GB/s memory
bandwidth. PC2100 running at 133MHz will produce 2.1GB/s memory bandwidth.
High memory bandwidth makes DDR an ideal solution for high performance
PC, workstations and servers.
Note: Registered DIMMs can be placed into DDR1~4 but unbuffered
DIMMs can be placed into DDR1~2 only.
DDR DIMM Slots
(DDR 1~4)
D
D
R
1
D
D
R
2
D
D
R
3
D
D
R
4