Can't exceed 4.0 overclock for 3570k GA-Z77X-UP4
Can't exceed 4.0 overclock for 3570k GA-Z77X-UP4
OC3D provides this manual, which is intended to assist. They are employing a 3770K and a marginally varied motherboard (mainly Gigabyte), though much of the advice remains relevant for your case.
Sakkura:
OC3D has this manual, which should be useful. They're using a 3770K and a slightly modified motherboard (still from Gigabyte), but most of it should still work for your case. Thanks for the assistance—I'll check the guide. I managed to reach 4.2 with 1.25v running for several hours at a top temperature of 80.