# PCIE

CEFR C2 · Noun

Source: https://englishreference.com/word/pcie
Updated: 2026-07-22

## Definition

Stands for Peripheral Component Interconnect Express. A fast way for a computer to connect to parts like graphics cards or storage drives inside the machine.

For teachers: Abbreviation for Peripheral Component Interconnect Express. A high-speed serial computer expansion bus standard designed to replace older standards like PCI and AGP, providing higher bandwidth and lower latency for internal hardware connections.

## Examples

- You need a motherboard with a PCIe slot for that graphics card.
- Modern gaming PCs require at least one PCIe x16 slot to handle the massive data throughput of high-end video cards.
- The transition from PCIe 4.0 to 5.0 effectively doubled the available bandwidth per lane, allowing for significantly faster data transfer rates in enterprise-level solid-state drives.

## Usage notes

- Often used as a modifier before another noun, such as 'PCIe slot' or 'PCIe lane'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.