You have a very good CPU, according to the low Vcore needed for 4.7GHz. 4.8GHz should be a breeze If it scales well, I believe that one may be a good 5GHz CPU. I think your cooler will suffice up to about 1.4v Vcore Load. Even if you hit 80c + in Prime95 Blend you are fine.
It's easy to post a screenshot in windows with very low vcore under no load.
Let's see a P95 Blend 12hr. run at 4.7.
I certainly couldn't do it with mine at that vcore, it would take well over 1.400v.