It is ~100MB/s read and ~100MB/s write at the same time; that is why: (read+write)Do not use SD-cards is an option I have been doing that for several years. Pi3B+ boots reliably from network, so it is just power and ethernet cable as minimum. I use PoE, so just 1 ethernet cable. Works great for CSI or USB camera or other low power stuff like TV-HAT, stays well withing the 12W power budget of basic active PoE. You get roughly max about 30MByte/s storage I/O speed. For Pi4 with real GbE, it is 200MByte/second (read+write). Behaves certainly faster than SD-card.
Its not possible to get 200MB/s on a Pi4 or any other gigabit ethernet. In special cases you can get a Pi4 to just top 100MB/s but usually its less than that, often around 60 to 70 MB/s.
Not possible when half-duplex channel down to the HW, which the USB2 connected Pi3B+ ethernet is. Same for SD-card 4 wire interface.
That is why I state it like this.
Things like SATA and PCIE and USB3 are HW full duplex, although some early USB3 stuff (just taken the USB2 driver implementation) might just do half duplex non-pipelined simultaneous read and write.
Statistics: Posted by redvli — Tue Jul 28, 2026 5:09 pm
/fit-in/580x348/filters:format(webp)/english-betterindia/media/media_files/2026/08/04/6-2026-08-04-18-31-45.png)
/pic9729642.png)
