Please enable JavaScript.
Coggle requires JavaScript to display documents.
TOPIC 3.1: STORAGE SYSTEM CHARACTERISTICS - Coggle Diagram
TOPIC 3.1: STORAGE SYSTEM CHARACTERISTICS
Types of RAM (...cont)
SRAM
Stands for static random access memory
Speed is high
Doesn't generally used for cache
SRAM's control complexity is less, it is a costly instrument
DRAM
Stands for dynamic random access memory
Works slowly
Requires refreshing periodically and used for main memory
DRAM's control complexity is high, it's cost is low
Types of RAM (...cont)
SDRAM
Synchronous DRAM designed to synchronize itself with the timing of the CPU.
This tends to increase the number of instructions that the processor can perform in a given time.
SDRAM speed is measured in Megahertz, which makes it easy to compare the processor's bus speed to the speed of the memory.
SDRAM is widely used in computers but known as generations of DDR RAM.
Cache Memory
As mentioned earlier the memory is slower than the CPU. System performance suffers when a fast device must wait to access data from a memory system.
This may be an i/o device or CPU, and the memory system may be main memory or an external device. Because computer users always seem to want larger memories, computer designers must carefully decide memory cost and performance.