[zamadatix]

The "insane" RAM bandwidth makes sense with Apple M chips and Strix Halo because it's actually "crap" VRAM bandwidth for the GPU. What makes those nice is the quantity of memory the GPU has (even though its slow), not that the CPU has tons of RAM bandwidth.

When you go to the desktop it becomes harder to justify including beefed up memory controllers just for the CPU vs putting that towards beefing some other part of the CPU up that has more of an impact in cost or performance.

[seec]

Yeah the only use of the large bandwith in Apple Silicon is for the GPU. I'm always amazed by the fanboys who keep hyping this trope.

Even when feeding all cores, the max bandwith used by the CPU is less than 200GB/s, in fact it is quite comparable to Intel/AMD CPUs and even less than their high-end ones (x86 still rules on the multi-core front in any case).

I actually see this as a weakness of Apple Silicon, because it doesn't scale that well. It's basically the problem of their Ultra chip: doesn't allow doubling of the compute and doesn't allow faster RAM bandwith, you only get higher RAM capacity in exchange for slower GPU compute.

They just scaled up their mobile architecture and it has its limit.