Hi, just read this mobo review, have a look at the temps of a 4770k at 4.7ghz > 90'c to 100'c[dual-radiator Noctua D14 cooler] that's Hoooooooooooot
http://www.guru3d.com/articles_pages/asus_sabertooth_z87_review,9.html
http://www.guru3d.com/articles_pages/asus_sabertooth_z87_review,9.html