Editing Local bus

{{about|a type of computer hardware|local bus services in public transportation|Public transport bus service}}
{{redirect|Processor local bus|IBM's PLB|CoreConnect}}
{{Unreferenced|date=February 2023}}

In [[computer architecture]], a '''local bus''' is a [[computer bus]] that connects directly, or almost directly, from  the [[central processing unit]] (CPU) to one or more slots on the [[expansion bus]].  The significance of direct connection to the CPU is avoiding the [[bottleneck (engineering)|bottleneck]] created by the expansion bus, thus providing fast [[throughput]]. There are several local buses built into various types of computers to increase the speed of data transfer (i.e. [[Bandwidth (computing)|bandwidth]]). Local buses for expanded memory and video boards are the most common. [[VESA Local Bus]] and [[Processor Direct Slot]] were examples of a local bus design.

Although VL-Bus was later succeeded by [[Accelerated Graphics Port|AGP]], it is not correct to categorize AGP as a local bus. Whereas VL-Bus operated on the CPU's [[memory bus]] at the CPU's clock speed, an AGP peripheral runs at specified clock speeds that run independently of the CPU clock (usually using a divider of the CPU clock).

== See also ==
* [[OPTi|OPTi Inc.]], which had its own bespoke local bus expansion slot design in the early 1990s

== References ==
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{{DEFAULTSORT:Local Bus}}
[[Category:Computer buses]]


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