I need some realistic expectations about 1x 3090

with a single 3090, what sort of speeds, quants and context lengths should i realistically expect out of qwen 3.6 27b? ive been to a few benchmark sites and the speeds look good, until i drill into the recipe and realise they are using 1024 contexts and things of the like. i think i may have set myself some unrealistic expectations of what i can achieve