If your GPU workflow is the classic kind of parallel processing with a compute bottleneck, then a couple of discrete GPUs is going to be faster, for sure.

If your GPU workflow is instead VRAM bottlenecked with unpredictable data access patterns then Apple silicon has the potential to be faster with that crazy amount of uRAM.

There’s also a dark tail of applications currently using the CPU because CPU-GPU-CPU latency is too damn high. Having everything on the same SoC will be a substantial latency improvement, which will enable using the GPU in places that discrete GPUs can’t go.

So if you’re doing 3D/vfx you’re probably unhappy, although as far as I know none of these people use Macs anyway, they all use PCs with high-end Nvidia cards.

On the other hand, this chip is going to be incredible for audio, once applications start taking advantage of it. Audio programming is really latency sensitive so discrete GPUs are right out, but with an SoC you can start to rely on the GPU being able to serve your request on time.