PCI Express

E53628

computer bus standard high-speed interface serial expansion bus

PCI Express is a high-speed serial computer expansion bus standard used to connect components like graphics cards, SSDs, and network cards to a motherboard.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (20)

Label	Occurrences
PCI Express canonical	21
PCI	7
PCIe	5
PCIe 5.0	2
NVLink (for some use cases)	1
PCI Express 4.0	1
PCI Express 4.0 interface	1
PCI Express Base Specification	1
PCI Express CEM specification	1
PCI Express Card Electromechanical Specification	1
PCI Express External Cabling specification	1
PCI Express M.2 specification	1
PCI Express Mini Card specification	1
PCI Express interface	1
PCIe 2.0	1
PCIe 3.0	1
PCIe 4.0	1
PCIe 6.0	1
PCIe Gen5	1
SATA Express	1

How this entity was disambiguated

This entity first appeared as the object of triple T425229 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: PCI Express
Context triple: [USB4, supportsProtocolTunneling, PCI Express]

A. InfiniBand
InfiniBand is a high-speed, low-latency communications standard commonly used as the interconnect fabric in supercomputers and large-scale data centers.
B. IEEE 1394
IEEE 1394 is a high-speed serial bus interface standard, commonly known as FireWire, used for real-time data transfer between digital devices such as computers, cameras, and audio/video equipment.
C. USB 3.2
USB 3.2 is a high-speed Universal Serial Bus standard that significantly increases data transfer rates and improves performance and efficiency over earlier USB versions.
D. USB4
USB4 is a high-speed, next-generation USB standard that unifies data, video, and power delivery over a single USB-C connector, based on Thunderbolt 3 technology.
E. NuBus
NuBus is a 32-bit, processor-independent expansion bus standard widely used in late-1980s and early-1990s workstations and personal computers, including many Apple Macintosh systems.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: PCI Express
Target entity description: PCI Express is a high-speed serial computer expansion bus standard used to connect components like graphics cards, SSDs, and network cards to a motherboard.

A. InfiniBand
InfiniBand is a high-speed, low-latency communications standard commonly used as the interconnect fabric in supercomputers and large-scale data centers.
B. IEEE 1394
IEEE 1394 is a high-speed serial bus interface standard, commonly known as FireWire, used for real-time data transfer between digital devices such as computers, cameras, and audio/video equipment.
C. USB 3.2
USB 3.2 is a high-speed Universal Serial Bus standard that significantly increases data transfer rates and improves performance and efficiency over earlier USB versions.
D. USB4
USB4 is a high-speed, next-generation USB standard that unifies data, video, and power delivery over a single USB-C connector, based on Thunderbolt 3 technology.
E. NuBus
NuBus is a 32-bit, processor-independent expansion bus standard widely used in late-1980s and early-1990s workstations and personal computers, including many Apple Macintosh systems.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	computer bus standard ⓘ high-speed interface ⓘ serial expansion bus ⓘ
abbreviation	PCI Express self-linksurface differs ⓘ surface form: PCIe
applicationDomain	desktop computers ⓘ embedded systems ⓘ laptops ⓘ servers ⓘ workstations ⓘ
backwardCompatibleWith	earlier PCI Express versions ⓘ
basedOn	point-to-point topology ⓘ
developer	PCI-SIG ⓘ
feature	error detection and correction ⓘ hot-plug support ⓘ link training ⓘ power management ⓘ quality of service mechanisms ⓘ
hasLaneConfigurations	x1 ⓘ x16 ⓘ x2 ⓘ x32 ⓘ x4 ⓘ x8 ⓘ
hasVersion	PCIe 1.0 ⓘ PCI Express self-linksurface differs ⓘ surface form: PCIe 2.0 PCI Express self-linksurface differs ⓘ surface form: PCIe 3.0 PCI Express self-linksurface differs ⓘ surface form: PCIe 4.0 PCI Express self-linksurface differs ⓘ surface form: PCIe 5.0 PCI Express self-linksurface differs ⓘ surface form: PCIe 6.0 PCIe 7.0 ⓘ
logicalTopology	root complex and endpoints ⓘ
notBackwardCompatibleWith	parallel PCI slots ⓘ
physicalLayer	differential signaling ⓘ
replaces	AGP ⓘ PCI Express self-linksurface differs ⓘ surface form: PCI PCI-X ⓘ
standardizedBy	PCI-SIG ⓘ
supports	NVMe ⓘ RAID controllers ⓘ capture cards ⓘ graphics cards ⓘ network interface cards ⓘ solid-state drives ⓘ
supportsProtocol	NVMe ⓘ surface form: NVMe over PCIe
transferMode	serial ⓘ
usedFor	connecting peripherals to motherboard ⓘ
uses	lanes ⓘ packets ⓘ transaction layer packets ⓘ

How these facts were elicited

Referenced by (51)

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

USB4 → supportsProtocolTunneling → PCI Express ⓘ

Thunderbolt → basedOn → PCI Express ⓘ

Thunderbolt → supportsProtocolTunneling → PCI Express ⓘ

InfiniBand → competesWith → PCI Express ⓘ

this entity surface form: NVLink (for some use cases)

ISA → replacedBy → PCI Express ⓘ

this entity surface form: PCI

LC Processor Direct Slot (LC PDS) → replacedBy → PCI Express ⓘ

subject surface form: LC Processor Direct Slot

this entity surface form: PCI

NuBus → wasEventuallySupersededBy → PCI Express ⓘ

this entity surface form: PCI

Serial ATA → relatedStandard → PCI Express ⓘ

this entity surface form: SATA Express

IBM PC compatible → usesBusArchitecture → PCI Express ⓘ

this entity surface form: PCI

AmigaOne computers → graphicsInterface → PCI Express ⓘ

this entity surface form: PCI

AmigaOne computers → graphicsInterface → PCI Express ⓘ

PCI Express → abbreviation → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe

PCI Express → replaces → PCI Express self-linksurface differs ⓘ

this entity surface form: PCI

PCI Express → hasVersion → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe 2.0

PCI Express → hasVersion → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe 3.0

PCI Express → hasVersion → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe 4.0

PCI Express → hasVersion → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe 5.0

PCI Express → hasVersion → PCI Express self-linksurface differs ⓘ

this entity surface form: PCIe 6.0

Apple M-series → supports → PCI Express ⓘ

this entity surface form: PCIe

Light Peak → supportsProtocol → PCI Express ⓘ

AMD EPYC → supports → PCI Express ⓘ

Alchemist → supportsFeature → PCI Express ⓘ

this entity surface form: PCI Express 4.0 interface

Arria → supportsStandard → PCI Express ⓘ

EISA → competedWith → PCI Express ⓘ

this entity surface form: PCI

U.2 → supportsProtocol → PCI Express ⓘ

SBus → replacedBy → PCI Express ⓘ

NVIDIA Tesla data center GPUs → supports → PCI Express ⓘ

this entity surface form: PCI Express interface

NCCL → supportsHardware → PCI Express ⓘ

this entity surface form: PCIe

GPUDirect → uses → PCI Express ⓘ

Sam460ex → usesBus → PCI Express ⓘ

AGP → succeededBy → PCI Express ⓘ

AGP → relatedStandard → PCI Express ⓘ

NVIDIA Ampere architecture → supports → PCI Express ⓘ

this entity surface form: PCI Express 4.0

NVMe → transport → PCI Express ⓘ

NVMe → compatibleWith → PCI Express ⓘ

this entity surface form: PCIe Gen5

PCI-X → supersededBy → PCI Express ⓘ

PCI-X → replacedInNewDesignsBy → PCI Express ⓘ

PCI-SIG → standardDefined → PCI Express ⓘ

this entity surface form: PCIe

PCI-SIG → standardMaintained → PCI Express ⓘ

this entity surface form: PCIe