This article is about a type of computer hardware. For local bus services in public transportation, see Public transport bus service.
"Processor local bus" redirects here. For IBM's PLB, see CoreConnect.
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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 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). 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 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).
In computer architecture, a localbus is a computer bus that connects directly, or almost directly, from the central processing unit (CPU) to one or more...
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The VESA LocalBus (usually abbreviated to VL-Bus or VLB) is a short-lived expansion bus introduced during the i486 generation of x86 IBM-compatible personal...
Interconnect (PCI) is a local computer bus for attaching hardware devices in a computer and is part of the PCI LocalBus standard. The PCI bus supports the functions...
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however. Later buses such as VESA LocalBus and PCI were used instead, often along with ISA slots on the same mainboard. Derivatives of the AT bus structure...
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motherboards with PCI slots. The VL-Bus operated at the same clock speed as the i486-bus (basically a localbus) while the PCI bus also usually depended on the...
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include the processor localbus (PLB), the on-chip peripheral bus (OPB), a bus bridge, and a device control register (DCR) bus. High-performance peripherals...
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