Apple M1 SOC is incredibly efficient hardware for C4D-based projects. This architecture has huge potential. Think about hardware accelerated ML(Machine Learning) part of Apple Silicon SOC for denoising in rendering engines, upscale, retiming and ML-assisted compositing. I hope SideFX, OTOY, Foundry and Autodesk will optimise their software for progressive SOC family from Apple as soon as possible like Maxon, INSYDIUM, Blackmagic Design or Pixelmator teams did some time ago. Native and optimised specifically versions are mandatory.
It's very good alternative solution at the end of 2021 especially on new peak of cryptomining fever with overpriced hardware for classical PCs. Best for everything? Not yet. But fast and capable enough to complete even complex projects without audible noise, abnormal heat and huge power consumption. Take a look on
my benchmarks results in C4D R23-25 for Cinema 4D Viewport Performance Benchmark & Scores (Updated Results). Phenomenal as for débute.
eGPU has sense for current situation with GPGPU-rendering software optimisation, but with every new generation Mx SOC and attention from skilled developers will blur the edge of performance between dedicated graphics cards and graphics of Apple Silicon. Why? Apple has resources and will for it.
I switched from Macs to PCs in 2011 completly. New Mx-based Macs are reasons to create with this friendly computer platform again.