Will I damage/kill my CPU?

[i7hero]

i7 4770k @ 4.8 GHz (48x100)
Core Voltage: 1.317 V
Idle Temperature: 30-35 degrees
Intense Gaming: 40-55 degrees
Prime95 Test: 70-80 degrees

Are these temperatures too hot? I understand overclocking in general will shorten the life span of a CPU but isn't the main killer of CPU's when overclocking, the heat and the heat that comes from increased Vcore? Well I don't think 40-55 degrees @ 4.8 GHz is too hot while playing video games? I'd like some input please.

 

[TechCIDLC]

If the temperature is below 70C when gaming, you should be fine.

 

[i7hero]

Does the core voltage and temperatures look good? I've also got another question, theoretically, couldn't your vcore go as high as you're willing to put it as long as you have sufficient cooling and a proper psu?