Here you go two examples from their testing.
1.17v to 1.21 v scales roughly 75-100mhz from 1050mhz.
If it's linear scaling with fury x on water then 1.3v should top out at 1200-1250mhz, On air the fury should in theory touch 1150-1200 at a real push, it might throttle too much at 1.3v on air though.