COMPTIA A+ Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 525

What is the lane speed of PCIe v2.x x1?

100 MB/s

250 MB/s

500 MB/s

The lane speed of PCIe v2.x x1 is actually 500 MB/s. PCI Express version 2.0 doubled the speed of its predecessor, with each lane capable of transmitting data at a rate of 5 GT/s (gigatransfers per second). In terms of bandwidth, this translates to an effective throughput of 500 MB/s per lane, which is achieved after accounting for overhead.

This means that a single lane in PCIe v2.x is equipped to handle a substantial amount of data transfer, making it appropriate for a variety of devices and applications that require reliable and fast communication. Understanding these specifications is crucial for anyone working with systems that utilize PCIe, whether for upgrading hardware or optimizing performance.

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985 MB/s

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