What wattage do the drivers (and fans) draw by itself?

I calculated roughly 1W per fan for my fans which are Arctic F12, based on [email protected] (see their specs).
Then there is the Meanwell LED driver, say some typical driver like the 1400mA or the 1750mA drivers, and the 12V MW driver for the fans.

Just wanting to know when I measure the TOTAL wattage draw of my fixture (4x CXB 3590, 4x fans, drivers), what wattage to attribute NOT to the actual COBs. (Say I measure 170W and can say that 20W of that is for fans and drivers. Maybe someone has a more exact figure). Probably something in the range 10-20W?

Edit: I am aware this is MORE complex, heat etc...effectiveness of LEDs, drivers...just need a ballpark figure I can work with...

most popular meanwells are 90-94% efficient

good question I imagine it would have smth to do with efficency of drivers as well but for ball part just subtract the cobs watts and say the rest is the fans and the wasted watts of drivers

if you know the exact current youre running sure.

most setups dont run the exact 1400 mA or whatever