Qsfp vs sfp

The main differences between QSFP (Quad Small Form-factor Pluggable) and SFP (Small Form-factor Pluggable) are:

  1. Number of Lanes

    • SFP: Single lane, supports up to 1G (SFP) or 10G (SFP+).
    • QSFP: Quad lanes, supports up to 40G (QSFP+) or 100G (QSFP28).

  2. Data Transfer Speed

    • SFP: Typically 1G to 10G per port.
    • QSFP: Typically 40G (QSFP+) or 100G (QSFP28) per port, with options for even higher speeds.

  3. Size and Form Factor

    • SFP: Smaller and used for lower-speed applications.
    • QSFP: Larger since it contains four channels for higher bandwidth.

  4. Power Consumption

    • SFP: Lower power consumption.
    • QSFP: Higher power consumption due to multiple lanes.

  5. Use Cases

    • SFP: Common in 1G/10G Ethernet switches, routers, and networking devices.
    • QSFP: Used in high-speed data center interconnects, cloud networking, and high-performance computing.

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