The compute capacity of these nVidia parts is significantly higher than that of an M2 Ultra. It’s not just about memory capacity.

The memory bandwidth of the nVidia GPUs is also significantly higher than the M2 parts.

The Apple silicone parts are impressive for what they are, but they don’t have a huge efficiency advantage for GPU compute. The full-size GPUs with huge memory buses and a large number of cores are still significantly more powerful.

There’s also a matter of getting data into and out of the GPUs and across the network, which takes a lot more than 10Gbe

The Apple silicon is great for running development workloads locally, but it’s significantly slower than full size GPUs.

I’m kind of surprised at how quickly everyone forgot that Apple’s marketing material greatly exaggerates their GPU performance.