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Raspberry Pi CM5 seen in the wild

53 points| ceinewydd | 1 year ago |twitter.com

37 comments

order

jsheard|1 year ago

We all knew this was coming, but my question is what's the topology? The same as the regular Pi5, with the RP1 southbridge built-in and only one PCIe lane exposed for the user, or does the CM5 leave off the RP1 and break out all five PCIe lanes for user shenanigans? They have a bare chip supply chain set up from the RP2040, so they could sell the RP1 separately for those who want to integrate it onto their carrier boards.

eqvinox|1 year ago

I kinda don't understand the point of the CM5. If you want a SoM, you're generally building something "fancy" around it… and at that point anything involving Broadcom is just about the worst choice.

I guess it gets some bump from the shared platform with the Pi, but… there's enough SoMs with good platform support at this point. And it's not like they're notably cheaper than those either?

(ed. I guess they are still cheaper than competing SoMs with roughly equal performance… but you pay the price of a poor closed platform instead)

postpawl|1 year ago

> there's enough SoMs with good platform support at this point

You’re talking about the new (and expensive) Turing RK1 and the Nvidia Jetson as alternatives?

tambourine_man|1 year ago

CM stands for compute module, for those wondering like me

raminf|1 year ago

Went down the voice assistant rabbit-hole with Home Assistant. To integrate with an LLM, you will need a separate processor (or connect to the cloud service).

Wondering if CM5 will offer enough of a boost to allow on-device LLM processing on a Home Assistant Yellow.

Guessing the answer is no, but it might be worth trying.

RIMR|1 year ago

Are we 100% sure that this picture of a CM4 box with a CM5 sticker slapped on it is legitimate?

mdotk|1 year ago

What does this mean for someone non-technical who uses a Pi for home files server?

Gasp0de|1 year ago

Nothing.

cicloid|1 year ago

I've been waiting for this, now, the question is, is this a drop-in replacement for the CM4? If so, these will sell really well (and will have shortages)

ceinewydd|1 year ago

Eben Upton was refusing to be drawn on specifics when Jeff Geerling and others chatted to him [1] about roadmaps recently. Nevertheless, the rumor is that CM5 will be drop-in compatible with the CM4, the details of that have been available via their NDA portal [2] for a few months now, but I think even this leak on Twitter (just a box with a label) is a breach of an NDA / embargo, so we might not know officially for a little bit yet?

[1] https://www.tomshardware.com/raspberry-pi/raspberry-pi-compu...

[2] https://pip.raspberrypi.com/categories/945-forward-guidance

MuffinFlavored|1 year ago

What's something you do with these compute modules (CM)?

Pet_Ant|1 year ago

Will it be compatible with things like the CM4 I/O board?

gorkish|1 year ago

If CM5 doesn't at minimum expose the PCIe x4, I'm going to flip some fucking tables over.

dheera|1 year ago

The trouble with these CM's is by the time you get your hands on CM5 and engineer your custom carrier board for it (because they change the pinout every time), Pi 6 has come out.

sircastor|1 year ago

Hopefully they're sticking with the same connectors and pinout as the CM4. The Raspberry Pi foundation considers the Compute Module line to be non-hobbiest-oriented anyway. They expect people to be building around the solution offered as a long-term product. The NEC display is a good example, because NEC is interested in driving the display for the life of the display, not in customers replacing the CM4 when its EOL.

srott|1 year ago

It won’t fit into rpi 400?