Problems with my i5-4670k and overclocking

[Mickey_Mouse]

I can only get to a stable 4.2ghz with overclocking and I'm pretty happy with that knowing the fact that not every CPU is the same. I am running into problems when playing games such as Crysis 3 or The Vanishing of Ethan Carter. When I play one of these games for not even an hour I get a BSOD. I have stress tested the CPU with AIDA64 Extreme Edition and I also have overclocked my GPU with a GPU Clock of 1180mhz and a Mem clock of 7360mhz. Any suggestions would really help?

My Specs:
i5-4670k - clocked to 4.2ghz
ASUS GTX 770 2GB OC Edition
DDR3 8GB Corsair 1600MHz Vengeance RAM
ASUS MAXIMUS VI Hero Motherboard
900 Watt Antec HCG-900 High Current Gamer Power Supply
2TB WD 3.5" Caviar Green SATA 6Gb/s HDD

 

[chromic]

try prime95 blend.

 

[DubbleClick]

Monitor your temperatures and voltage, then come back here. Also post the error code of the BSOD, please.