A Comprehensive Introduction to Computer Systems and Beyond: A Supplemental Study Guide for the CompTIA A+ Certification Exam by Samuel Castro

Author:Samuel Castro [Castro, Samuel]
Language: eng
Format: azw3
Publisher: FunctionalFit Publishing
Published: 2019-01-05T16:00:00+00:00

Chapter 4

Computer Hardware II

7.1RAM and their types

The amount of memory available also controls how much data the computer can have readily available. RAM makes up the bulk of a computer's memory. The general rule of thumb is the more RAM the computer has, the better. The speed of the RAM connection directly controls how fast the computer can access instructions and data, and therefore has a big effect on system performance. A fast processor with slow RAM is going nowhere. Much of the memory available today is dual data rate (DDR) memory. This means that the memory can transmit data twice per cycle instead of once, which makes the memory faster.

Also, most motherboards have space for multiple memory chips, and on newer motherboards, they often connect to the northbridge via a dual bus instead of a single bus. This further reduces the amount of time it takes for the processor to get information from the memory. A motherboard's memory slots directly affect what kind and how much memory is supported. Just like other components, the memory plugs into the slot via a series of pins. The memory module must have the right number of pins to fit into the slot on the motherboard.

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