Maybe not old but if this was say a 6k card that would make it accessible to pretty much any business and at least some hobbyists. 160GB of Lpddr5 should be less than 2k, so it's easily doable if they've got the will. 4 x 5090s is 128GB and probs much more powerful at ~8k, so it would need to be 6/7k to make it make sense.