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Chapter 2
2-4 Main Memory Configuration
The DDR SDRAM memory system consists two banks and can supports the memory
size up to 1GB per bank. If you only use one bank it does not matter which one you
use and if you use two or more banks, it does not matter which bank you install first.
DDR SDRAM Specifications
FSB Frequency
100 MHz
133 MHz
DIMM type:
2.5V, unbuffered 64/128/256/512-bit DDR SDRAM
Module size:
Single/double-sided 64/128/256/512MB/1GB
Parity:
Either parity or non-parity
DDR
Double Data Rate transfers allows for data to be fetched on both the rising and falling
edges of the clock thus doubling the effective transfer rate of the clock. For example
a 133MHz DDR clock would achieve a peak transfer rate equal to that of a 266MHz
clock. The effective transfer rate is equal to the clock frequency multiplied by the
bus width, doubled.
12
Internal System Bus Freq.
200 MHz
266 MHz
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