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Chapter 2
Memory Installation
Memory Bank Configuration
The mainboard supports a maximum memory size of 3GB. It
provides three 168-pin unbuffered SDRAM DIMM (Double In-Line
Memory Module) sockets and supports 64MB to 512MB technology.
Synchronous DRAM is a type of dynamic RAM memory chip that has
been widely used starting in the latter part of the 1990s. SDRAMs are based on
standard dynamic RAM chips, but have sophisticated features that make them
considerably faster. First, SDRAM chips are fast enough to be synchronized
with the CPU's clock, which eliminates wait states. Second, the SDRAM chip is
divided into two cell blocks, and data is interleaved between the two so that
while a bit in one block is being accessed, the bit in the other is being prepared
for access. This allows SDRAM to burst the second and subsequent, contigu-
ous characters at a rate of 10ns, compared to 60ns for the first character.
SDRAM provides 800 MBps or 1 GBps data transfer depending on
whether the bus is 100MHz or 133MHz.
2-6
DIMM 1 ~ 3
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