Or the hard way, math!!
At cap 90 u will have 267 stat point to be spend.(according to bobtheveg)
Say u want to make 1:7 ratio build,mean there is 1+7=8 portion.
Divide 267 with 8 u will get 33.37 so to round it mean 1 portion will get 33 point.
So stat point for STR that is 1 portion,u will need to put 33 point OR 11 level or str and the rest you put into INT.
