I use an M1 MacBook Air from 2020.
- 8 CPU
- 8 GPU
- 16 GB memory
- 1 TB storage
DPL works as smoothly on it as on my 2019 iMac and export times are about the same. If I’d have to start from scratch, I’d probably get a Mac mini with an external display that might or might not support hardware calibration and a wider than sRGB gamut.
Be aware of a possibly important issue of DPL with Apple Silicon processors: DeepPRIME XD introduces purple overlay/chromatic aberration.
I almost never use DeepPRIME XD, so it does not hurt me, YMMV.