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SY-6ICA
Quick Start Guide
9
Hardware
Installation
Step 3. Configure Memory
This motherboard incorporates the latest Direct Rambus™ technology memory subsystem
capable of delivering three times the bandwidth of conventional 100MHz SDRAM based
systems. The board comes with two RIMM™ sockets for modular memory expansion,
allowing maximum memory array sizes of up to 256MB/512MB/1GB using RDRAM
modules that come with 64/72Mbit, 128/144Mbit or 256/288Mbit ICs.
This motherboard supports a single channel of Direct RDRAM memory that can
accommodate a maximum of 32 RDRAM devices. At a FSB frequency of 100MHz, 300 &
400MHz Direct RDRAMs are supported, At a FSB frequency of 133MHz, 356 & 400MHz
direct RDRAMs are supported, providing up to 1.6GB/sec of data transfer rate.
Memory Configuration
Direct Rambus™ signals are daisy-chained through each RDRAM memory module, as
shown in the figure below.
Therefore, you must always install a total of 2 Direct RDRAM
and Continuation modules (e.g., one Direct RDRAM and one Continuation modules)
in all two RIMM slots to complete the memory subsystem,
or otherwise the
motherboard main memory will not be functional. There is no restriction on installing Direct
RDRAM and Continuation modules in which RIMM slots.
RIMM 1 RIMM 2
Graphics
Processor
ASIC
-Processor
[RDRAM 1]
[RDRAM 2]
Daisy-chaining the two DRAMs
Memory
Control
Hub
SY-6ICA Direct Rambus Memory Subsystem
*ALWAYS INSTALL RDRAM MODULESTWO