Hardware Setup
2-5
D
D
R
1
D
D
R
2
D
D
R
3
The mainboard provides 3 slots for 184-pin, 2.5V DDR DIMM with 6
memory banks. You can install PC1600/PC2100/PC2700 DDR SDRAM modules
on the DDR DIMM slots (DDR 1~3). To operate properly, at least one DIMM
module must be installed.
Memory
DDR DIMM Slots
(DDR 1~3)
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. Three types
of DDR SDRAM are available at the time of writing: PC1600, PC2100 and PC2700.
The following table shows the clock and peak bandwidth of each type of
DDR SDRAM module:
PC2700
PC2100
PC1600
(DDR333)
(DDR266)
(DDR200)
Clock
166MHz
133MHz
100MHz
Peak
Bandwidth
2666MB/s
2133MB/s
1600MB/s
