22
Install the Memory Modules
For this mainboard, you must use 184-pin 2.5 non-buffered Dual
In-line Memory Modules (DIMMs). The memory chips must be
Double Data Rate (DDR).
SDRAM provides 800 MBps or 1 GBps data transfer depending
on whether the bus is 100 MHz or 133 MHz. Double Data Rate
SDRAM (DDR SDRAM) doubles the rate to 1.6 GBps and 2.1
GBps by transferring data on both the rising and falling edges of
the clock. DDR SDRAM uses additional power and ground lines
and requires 184-pin DIMM modules rather than the 168-pin
DIMMs used by SDRAM.
If your processor operates over a 133 MHz system bus, you can
install DDR266/200 memory that operates over a 133 or 100
MHz bus. If your processor operates over a 100 MHz system
bus, you can install memory that operates over a 133MHz or
100 MHz bus. If your processor operates over a 66MHz, you can
only install memory chips that operate at 100MHz.