VESA Local Bus

E184291

VESA Local Bus was a high-speed expansion bus standard for IBM-compatible PCs in the early 1990s, designed primarily to improve graphics and overall system performance by providing a faster connection to the CPU than the older ISA bus.

All labels observed (1)

Label Occurrences
VESA Local Bus canonical 4

How this entity was disambiguated

Statements (49)

Predicate Object
instanceOf computer bus standard
expansion bus
abbreviation VLB
addressSpace 32-bit
advantageOverISA faster graphics throughput
higher bandwidth
reduced bus bottleneck
alsoKnownAs VL-Bus
architectureType local bus
busType synchronous bus
busWidth 32-bit
category computer hardware standard
motherboard expansion technology
compatibility coexisted with ISA slots
connectedTo CPU local bus
dataPathWidth 32-bit
dataTransferMethod parallel bus
designedForCPUGeneration Intel 80486
developer VESA
surface form: Video Electronics Standards Association
era 486-based PCs
fullName VESA Local Bus self-link
geographicScope worldwide
historicalSignificance transitional bus between ISA and PCI
introductionPeriod early 1990s
limitation electrical loading issues with many cards
poor scalability to higher clock speeds
tightly coupled to 486 CPU design
maximumSlotsRecommended 3
operatingMode shared bus
platform IBM PC compatible
predecessor ISA bus
Industry Standard Architecture
primaryUse disk controller cards
graphics adapters
purpose improve graphics performance
improve overall system performance
provide a high-speed expansion bus for IBM-compatible PCs
shortName VESA
signalSource directly from CPU
slotLocation inline with ISA slots on motherboard
standardizedBy VESA
status obsolete
successor PCI bus
Peripheral Component Interconnect
supersededBy Peripheral Component Interconnect
surface form: PCI
targetMarket PC graphics acceleration
consumer PCs
typicalClockSpeed 33 MHz
usedIn desktop personal computers

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

ISA replacedBy VESA Local Bus
EISA competedWith VESA Local Bus
VESA Local Bus fullName VESA Local Bus self-link