If you grow a slow groing /blooming plant you can get up to a pound or two
But that is not the best way to do it.
Pot productioin has a basic G/W/M
The best I have seen was a scrog by Tic a few years back 0.6 gwm
Simply put 1000 grams , 1000 watts in 2 monts would give you 0.5 gwm
Note time is the factor, and time is money for a cash croper.
I use a 3 part system and get 0.46 G/W/M
I must note that it takes a few crops to maximize your output, I'm a lazy grower and do not want to screw with scrog. Flood and drain automatioin and lazy.
Grow for fun , ass for grass, peace for piece.