Mac Mini - Intel UHD Graphics 630

I recommend that you review the GPU requirements stated for Maya or Cinema 4D. There are likely custom shaders and other specialty GPU features in discrete GPUs that Intel has not incorporated into its 8th Generation integrated 630 GPU.

If this is the case, then forget about the 2020 Mac mini, and go for a 2020 iMac with the medium, discrete Radeon 5700XT 8GB option, and as much SSD storage and RAM that you can afford.

The UHD 630 is slower than an HD 6970M... sort of like a 6770M but with more VRAM and Metal support.

For modern 3D graphics either invest in mac mini + eGPU or get a new 2020 5K iMac.