In my experience, 4770K is going to run hot. My 4770K runs prime 95 at 4.4GHz at about 65°C with a 1.25 vcore. If I try to run it at 4.5 it BSOD, yet I can run Intel burn test, Intel Extreme Tuning utility burn test, and AIDA64 burn test, all at 4.5 w/1.25 vcore with temps all below 90°C. On mine if I increase vcore to try to run Prime it get too hot. I am using a Swiftech ultimate HD 220 for cooling. All of these Haswell chips are different. I had to lower my DDR3 speed from 2400 to 2133 just to get my I7 to run through these burn tests at 4.5. Of course that means I was able to tighten up the timings which gave me some of the memory speed back. It is a lot of trial and error with these chips. Also I have turned all C-states off except C-3. Some of us have to, others don't.
Good luck.