Hi I have the exact same components, firstly update the bios there a new C version.
In the bios turn off all the power saving crap such as
Phase control (green power)
For a 4.5ghz clock
turn vcore up to 1.25v(my settings) can do 1.24, if no boot start @ 1.3v
leave vdroop alone
Assuming your memory is 1600 setup the timings accordingly 1.5v