you need to get the temps down below 70c if you want 5Ghz
not all chips will do 5Ghz and the 3750ks don't clock as well as say a 2500k
and you are gonna need at least 1.40v to get to 5 by the voltage curve you listed more vtt would't hurt either but keep it under 1.9 same for pll
pll beyond 1.89v = fried
I am not here to be nice, I am not here to be polite BUT I am here to help ...