It's 8 watts at 3.7v, and 10 watts at 4.2v. Don't know why you would want hotter than 10 watts with a single coil carto.
Why are watts even being brought into the equation here? Provari doesnt display watts so its not needed unless you actually LIKE looking at charts and doing math that goes around your elbow to get to your head
1.7ohm can go as high as 4.4 bolts before I get E1s from my Provari. As youve already pointed out it starts to taste smoky and burnt at 4.0. Ive found for me that 3.7 volts is my sweet spot.
If you apply that same reasoning to the 3.0ohm atomizer then 5.0 volts should be about perfect for you.
I know I said I hate math, what I should have said was I hate complicated math that brings variables into the equation you have no way of knowing unless youre online looking at a chart.
As a general rule of thumb on a single coil carto or atty take the number of resistance and add 2 to get the voltage for your target sweet spot.You might have to adjust up or down .01 volt either way but this pretty accurate for a lot of people.
With a dual coil (which I dont recommend) double the ohms of the atty and add 2 so a 3ohm dual coil would need 8 volts for optimum flavor and vapor production (physically impossible with a Provari)