SDRAM (synchronous DRAM) is a generic name for various
kinds of dynamic random access memory (DRAM) that are synchronized with
the clock speed that the microprocessor is optimized for. This tends to
increase the number of instructions that the processor can perform in
a given time. The speed of SDRAM is rated in MHz rather than in nanoseconds
(ns). This makes it easier to compare the bus speed and the RAM chip speed.
You can convert the RAM clock speed to nanoseconds by dividing the chip
speed into 1 billion ns (which is one second). For example, an 83 MHz
RAM would be equivalent to 12 ns.
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