Heard from a guy who owns a large farm, he has connections in the industry for GPUs and other computer components. He basically said that AMD is very difficult to source unless you know someone high up.

But NVIDIA on the other hand will never be out of supply of their GPUs. They are loads and loads of 1060, 1070, 1080 and NVIDIA predicts the supply will never dry up.

So here is proof that the difficulty gains will still keep climbing...