I'm on an rx7600 too. I have done loads of testing and benchmarking and the best model is orinth1.5 35b a3b. I get around 40tok/s generation from it. I run it with llama.cpp with the rocm driver, and use the iq4_xs unsloth quant. It's based on qwen3.6 35b a3b, but trained on complex thinking and took calling. It's miles ahead of anything else I've tried.