3 ms·
M.2 is possible on the compute module, but there's iirc only a single PCIe lane on the pi... so it's not as speedy as desktop and also you'd need a PCIe switch
by tehbeard 5y ago
M.2 is possible on the compute module, but there's iirc only a single PCIe lane on the pi... so it's not as speedy as desktop and also you'd need a PCIe switch to get M.2 storage and networking/USB which just increases costs further and in the zero's case, probably not possible with board space.
pi3/4 can boot straight from USB.
In my case.. I have a couple of old gen1/1.2 Pis, no boot straight from USB, but an SD card with only the FAT32 /boot partition that's got the read lock on card set, and boot config set for a USB stick in the side of it. They're still slow, but not gonna brick the SD card.