4 ms·

But for an OS you don't need it as the RPI CM3/CM4 can already be equipped with eMMC. It's only useful if you really need more than 32GB. https://www.cytron.io

But for an OS you don't need it as the RPI CM3/CM4 can already be equipped with eMMC. It's only useful if you really need more than 32GB. https://www.cytron.io/p-raspberry-pi-cm4-with-wireless-pick-ram-and-emmc https://www.cytron.io/p-raspberry-pi-cm4-with-wireless-pick-... https://www.cytron.io/p-raspberry-pi-cm4-without-wireless-pick-ram-and-emmc https://www.cytron.io/p-raspberry-pi-cm4-without-wireless-pi...

jacob019 6y ago
Or if you want something more performant and reliable than eMMC.
- mbreese 6y ago
  Exactly. There are so many use cases for the RPi that very often people wonder why you’d ever want it to support X. When the people that want feature X have a completely different use case in mind. Embedded people don’t need faster IO, so why use it? If you want to use it as a desktop, you might not need eMMC, but an M.2 slot would be critical. It’s really an interesting ecosystem of uses.
cptskippy 6y ago
Does the eMMC get corrupted as easily as the SD cards do?
- bityard 6y ago
  SD cards don't get corrupted easily, if you buy the right ones. (Unfortunately most people don't, and end up blaming the Pi for being unreliable.)
  - monocasa 6y ago
    Well, it's not easy. Brand name doesn't get you anything in this department, you have to track down "industrial" SD cards.
    - geerlingguy 6y ago
      On top of that, it's 50/50 in my experience as to whether the fault was the microSD card, or a weak / insufficient power supply (that's the main reason, I think, the Pi Foundation now makes their own).
  - cptskippy 6y ago
    > if you buy the right ones No offense but that's true of everything and incredibly unhelpful. As others have pointed out, you can't rely on name brand or even product line. This isn't an issue isolated to Pis either, GoPros, among other devices, are notorious for eating microSD cards as well.
- monocasa 6y ago
  Not nearly as much. eMMC is designed for these use cases.
phamilton4 6y ago
Do you know if anyone makes a back-plane/carrier board (not sure on what the actual name is) for hosting/holding multiple CM4? I found a few for the CM3 but they seem a bit cost prohibitive.
- Ductapemaster 6y ago
  Not affiliated with the project in any way, but I do know this one is launching soon! https://turingpi.com/ https://turingpi.com/ Edit: Spoke too soon, only works with the CM3/3+. Leaving it here in case anyone is interested.
  - phamilton4 6y ago
    They have a v2, thanks to the user who commented after you! https://turingpi.com/v2/ https://turingpi.com/v2/
- wmf 6y ago
  https://turingpi.com/turing-pi-2-announcement/ https://turingpi.com/turing-pi-2-announcement/
- geerlingguy 6y ago
  There is at least one other multiple-CM4 board 'in development', though I can't share any detail, other than keep an eye on this page for when it might appear: https://pipci.jeffgeerling.com/boards_cm https://pipci.jeffgeerling.com/boards_cm

jacob019 6y ago

Or if you want something more performant and reliable than eMMC.

mbreese 6y ago
Exactly. There are so many use cases for the RPi that very often people wonder why you’d ever want it to support X. When the people that want feature X have a completely different use case in mind. Embedded people don’t need faster IO, so why use it? If you want to use it as a desktop, you might not need eMMC, but an M.2 slot would be critical. It’s really an interesting ecosystem of uses.

cptskippy 6y ago

Does the eMMC get corrupted as easily as the SD cards do?

bityard 6y ago
SD cards don't get corrupted easily, if you buy the right ones. (Unfortunately most people don't, and end up blaming the Pi for being unreliable.)
- monocasa 6y ago
  Well, it's not easy. Brand name doesn't get you anything in this department, you have to track down "industrial" SD cards.
  - geerlingguy 6y ago
    On top of that, it's 50/50 in my experience as to whether the fault was the microSD card, or a weak / insufficient power supply (that's the main reason, I think, the Pi Foundation now makes their own).
- cptskippy 6y ago
  > if you buy the right ones No offense but that's true of everything and incredibly unhelpful. As others have pointed out, you can't rely on name brand or even product line. This isn't an issue isolated to Pis either, GoPros, among other devices, are notorious for eating microSD cards as well.
monocasa 6y ago
Not nearly as much. eMMC is designed for these use cases.

phamilton4 6y ago

Do you know if anyone makes a back-plane/carrier board (not sure on what the actual name is) for hosting/holding multiple CM4? I found a few for the CM3 but they seem a bit cost prohibitive.

Ductapemaster 6y ago
Not affiliated with the project in any way, but I do know this one is launching soon! https://turingpi.com/ https://turingpi.com/ Edit: Spoke too soon, only works with the CM3/3+. Leaving it here in case anyone is interested.
- phamilton4 6y ago
  They have a v2, thanks to the user who commented after you! https://turingpi.com/v2/ https://turingpi.com/v2/
wmf 6y ago
https://turingpi.com/turing-pi-2-announcement/ https://turingpi.com/turing-pi-2-announcement/
geerlingguy 6y ago
There is at least one other multiple-CM4 board 'in development', though I can't share any detail, other than keep an eye on this page for when it might appear: https://pipci.jeffgeerling.com/boards_cm https://pipci.jeffgeerling.com/boards_cm