Memory; Introduction To Sdram - MSI 650GLMS User Manual

The mainboard provides 2 sockets for 168-pin unbuffered SDRAM
DIMM (Double In-Line Memory Module) modules and supports a maximum
memory size of 2GB.

Introduction to SDRAM

Synchronous DRAM (SDRAM) 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 be-
tween 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, contiguous 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.

Memory

(DIMM 1&2, from right to left)
Hardware Setup
DIMM Slots
2-7