Here [1] are some various benchmarks for a RTX 4090 on models like Qwen 3.8, where it usually hits around 43 tokens/s. You can find similar vids on YouTube showing it live for comparison, 'proof' if you doubt, etc. And yes, it is frontier tier.
Dude, why do you think I care about benchmarks on a 4090 when I know for a fact my 6000 Blackwells are insufficient?