Even the M3 Max seems to be slower than my 3090 for LLMs that fit onto the 3090, but it’s hard to find comprehensive numbers. The primary advantage is that you can spec out more memory with the M3 Max to fit larger models, but with the exception of CodeLlama-70B today, it really seems like the trend is for models to be getting smaller and better, not bigger. Mixtral runs circles around Llama2-70B and arguably ChatGPT-3.5. Mistral-7B often seems fairly close to Llama2-70B.
Microsoft accidentally leaked that ChatGPT-3.5-Turbo is apparently only 20B parameters.
24GB of VRAM is enough to run ~33B parameter models, and enough to run Mixtral (which is a MoE, which makes direct comparisons to “traditional” LLMs a little more confusing.)
I don’t think there’s a clear answer of what hardware someone should get. It depends. Should you give up performance on the models most people run locally in hopes of running very large models, or give up the ability to run very large models in favor of prioritizing performance on the models that are popular and proven today?