ARCTIC Freezer Xtreme Rev 2 for Overclocking 6600K

[NikezTech]

Does ARCTIC Freezer Xtreme Rev 2 provide enough cooling power for overclocking Intel i5 6600K?
Im running NZXT S340 whith 4-case fans. At stock speed temps are 40c-70c max.

 

[BigBoomBoom]

Stock speed temp seems OK but doesn't look like you have a lot of headroom in term of overclocking. Maybe 4.2 to 4.4Ghz is my guess.