just stop there, pat yourself on the back, call it day and welcome yourself to the exclusive "stable and cool 4.5+ghz IB OC" club, which is all the more admirable when you do it with a so so CPU cooler. consider yourself really lucky, as most chips starts seeing really high temps when you raise the voltage in the 4.2-4.3 mark. i've only ever seen two others who've hit 4.6-4.7ghz here.
I wanted to check one more thing before i gave up all together. I dropped the vcore to 1.305, and upped my fan setting. now running around 55c max. I'm not going to use it all the time, but I may up it for video conversions. I get a 50-60 fps jump.