Depends on how you go about it and how good you are. Too many variables to answer.
Yeah I feel that. I should prob give some context. I grew 5 photos veg'd for 3 months before with the MH/HPS. Yielded around 1.3lb It was my first grow ever and now I'm just at a point where I might upgrade my equipment to the latest technology. I just needed to consult people like yourself that know about these more advanced lights in general.