Nvidia and AMD both have their own unified memory laptop SOCs, now. Apple Silicon's GPU is relatively weak, it's one of the less-efficient ways to use 100w for compute.
Even the fastest Apple Silicon chips like the M5 Max and the M3 Ultra still put up worse GPU compute performance than last-gen laptop RTX 4080 chips. And they don't scale, the largest M3 Ultra cluster you can configure is still ~2,000x smaller than a DGX SuperPOD. There's a reason Apple discontinued their rackmount hardware, there's very little demand for Apple Silicon in the datacenter.
Even the fastest Apple Silicon chips like the M5 Max and the M3 Ultra still put up worse GPU compute performance than last-gen laptop RTX 4080 chips. And they don't scale, the largest M3 Ultra cluster you can configure is still ~2,000x smaller than a DGX SuperPOD. There's a reason Apple discontinued their rackmount hardware, there's very little demand for Apple Silicon in the datacenter.