3 ms·
There aren't any free PCIe lanes on the SoC, so even if they added a bridge chip for a SATA / M.2 SSD it would have to be connected over USB. Besides, the devi
by exged 6y ago
There aren't any free PCIe lanes on the SoC, so even if they added a bridge chip for a SATA / M.2 SSD it would have to be connected over USB.
Besides, the device is $70. A $10 32GB eMMC chip would be a far more reasonable ask at this price point if greater reliability is desired.
- tsjq 6y agothat's interesting. curios: are these two comparable in terms of speeds: eMMC and NVME/M2SSD ? or am I confusing among oranges and apples?
- stjohnswarts 6y agoThey are in completely different ball parks. M.2 drives can easily saturate a usb3.0 link, emmc not so much.
- akiselev 6y agoeMMC tops out at 80-100 mb/s, NVME is an order of magnitude faster usually.
- tarruda 6y agoI see, thanks. Have you seen the compute module though? It exposes a PCIe slot via a separate I/O board. At first I assumed there was some free lanes, but now I see it doesn't exposea usb 3.0 ports, only 2.0. Still, I would rather have a dedicated bus for storage with usb 2.0 rather than usb 3.0 [1]: https://www.raspberrypi.org/products/compute-module-4/?variant=raspberry-pi-cm4001000&resellerType=home https://www.raspberrypi.org/products/compute-module-4/?varia...