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A quick look at the claims suggest 100GB/s is the RAM speed for the M2 Macbooks.
A single DDR5 RAM stick is about 50GB/s. So that's two of those in a dual channel config (effectively quad channel since each DDR5 stick is now a dual channel on it's own).
There's a good argument for introducing a new smaller DDR5 module so size isn't an issue, but I'm not sold on speed being the main problem. RAM is fast even when it's slow, and having more of it is almost always better than having it faster. No amount of RAM speed will ever compensate for swapping to storage when you run out.
At the very least mandate that the manufacturer replace the RAM at a reasonable cost at a later date, if you need more for future apps or if it goes wrong. We go on and on about fighting eWaste, yet entire laptops go in the bin when they don't have enough RAM.
Go look at the RAM speed of the M2 Pro and M2 Max. They are essentially quad and eight channels respectively to get the speed they achieve. Good look doing that with SODIMM modules.
Actually good RAM speed is absolutely essential for GPU performance. Saying how more RAM speed isn't important for a use case like the Apple Silicon Macs is ignorant AF.
You're getting heavily downvoted by people who obviously don't understand how RAM works. Or how computers work?
Guys, Apple is shitty, we all know this, but onboard RAM is the least of their anti-consumer practices.
The problem with socketed RAM is the length of the traces going back to the CPU. That 100% reduces performance (and battery life) by a significant amount. Especially when using that socketed RAM as iGPU VRAM.
Dell's CAMM standard reduces the latency compared to SODIMM, for socketed RAM, but what we really need is for someone like Apple to invest R&D into really tiny RAM sockets that are super close to the CPU, instead of researching ways to lock users out.
Doesn't even sound that complex. Little LGA style socket, tiny heatsink clip to hold it in place.
There's even laptops that have soldered RAM and a SODIMM slot. Could you limit the GPU to using the soldered RAM? Still won't help you if it develops a fault though.
The RAM is built onto the substrate. Every contact you add increases signal degredation. Plus actually trying to fit eight sockets on a SoC package would be a complete nightmare.
Dividing RAM like that into two pools would violate the permise of the whole unified memory system. You're really asking for the wrong thing here. Why not convinve them to do something like a modular SSD that's far more achievable? Also memory that doesn't come at sky high prices with an actual sensible mimimum (8GB on MacBooks in 2023, really?).
For other laptops there is actually a solution to this problem called a CAMM. It would even work for the M2 Macbooks possibly (not the M2 Pro or Max) if apple are willing to sacrifice size or battery life of the laptop. The reason this wouldn't work for the M2 Pro and Max is you would need two or four of these things. It would be diffcult enough to fit just one in a Macbook that have tiny, tiny logic boards to begin with.
Thanks a bunch. The level of ignorance here to Apple's design choices is palpable. Some of the stuff they do is very anti-consumer. Soldered RAM isn't one of them - at least on Apple Silicon. Having modular GPU RAM hasn't been a thing for over a decade for good reasons.