If I really want to do some playing around in this area, would it be good to get a RTX 4000 SFF which has 20 GB of VRAM but is a low-power card, which I want as

If I really want to do some playing around in this area, would it be good to get a RTX 4000 SFF which has 20 GB of VRAM but is a low-power card, which I want as it would be running 24/7 and energy prices are pretty bad in Germany, or would it make more sense to buy an Apple product with some M2 chip which apparently is good for these tasks as it shares CPU and GPU memory?