Earlier quoted context omitted.
For falcon 40b you probably need an A100 40gb or so. Every model is drastically different. If you want to run something on consumer hardware, your best bet is using anything ported to the ggml framework, especially if you're on Apple silicon.
Do you know any "standard" way or measures to determine the approximate hardware requirements of a model?
For example, assuming GPTQ 4bit a 100GB 16bit model needs 26-30GB of VRAM. The smallest video cards which meet this requirement will be 32GB or 40GB cards. (two 24GB cards in parallel work as well, e.g. 2x3090)