Noctua L9i CPU Cooler question

I have this CPU cooler in my machine with a 4670k can this Cooler keep a 4.2ghz overclock? I want to add alittle performance but was worried if this CPU cooler was capable at keeping the CPU stable.

... and you cant test this yourself? OCCT, hardware monitor, prime95, coretemp. Heaps of tools for you to play with.

You certainly wont get far in terms of overclocking a haswell cpu and such a small cooler.

I wanted to be secure before I started testing it out.

i wouldnt.