The Pi 3 (and previous models) had an issue of bottlenecked bandwidth when using Ethernet and USB simultaneously. Is this resolved in the Pi 4?


1 Answer 1


Yes, it resolves it.

“While Raspberry Pi 3 Model B+ added Gigabit Ethernet connectivity, throughput on Raspberry Pi 4 is free from the single shared USB 2.0 channel to the SoC.” (https://www.raspberrypi.org/magpi/raspberry-pi-4-specs-benchmarks/)

Graph showing problem resolved

  • 7
    To be more specific, the USB host controller is connected directly to the SoC via a PCIe bus. The Ethernet Controller is built directly in to the SoC.
    – scotty3785
    Jun 25, 2019 at 10:04
  • 3
    rejoice! Though I suppose it would be nice if there was a PCIe built into the board for utilization.
    – tuskiomi
    Jun 26, 2019 at 13:59

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