I am assuming you currently use linux. Do you currently use CUDA with freecad and solidworks(which I am assuming you use through WINE or a VM). AMD generally has better raw performance at same price but has nothing equivalent to CUDA at this point. There is ROCm and plans for CUDA through ROCm but GPU support for ROCm is hit or miss. You also have openCL but performance is nowhere near as good as using CUDA even if the GPU using CUDA is weaker. AMD. will provide a much better gaming and day to day usage experience though