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Glossary:Central Processing Unit (CPU)

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Revision as of 16:20, 22 February 2012 by Newmansan (talk | contribs) (rough first draft :))
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The CPU is one of the primary devices that enables a computer to do work. It performs the instructions of a computer program. CPU's today are rated by the number of cores per die they feature, as well as the speed of each core. Today CPU's can contain anywhere from 1 to 8 cores per dies (or higher for server CPU's). CPU's featuring more then 1 core per die are said to be multi-core. Speeds for a CPU are measured in terms of Ghz (Gigahertz), and measure how many instructions a core can perform in a set amount of time.

Multi Core

Most CPU's that are made today are multi-core, meaning they feature 2 or more cores per CPU die. Many laptops today feature CPU's with 2 cores. Gaming desktops can feature 4 or more cores.

Speeds

CPU speeds can range anywhere from ~1.0Ghz to 3.4Ghz stock. The CPU speed is primarily limited by the CPU clock.

OverClocking

Overclocking is causing a CPU to run at speeds beyond what the manufacturer recommends. Overclocking can damage the CPU if performed improperly. Oftentimes, the stock cooler is inadequate for CPU overclocking.


Graphics

Some CPU's can feature onboard graphics capabilities. These graphics capabilities may be adequate for web surfing, but are often not adequate for high end gaming. Intel's first CPU line that featured these capabilities was their Nehalem architecture.


Notes