hi i want purchase a used proccesor either a i7 4770k which i have found for £150 vs or a i7 4790non k which is £100 im not planning to overclock. performance wise which will be faster i7 4770k vs i7 4790 both stock
Intel's stock coolers are never okay It will just work, won't burn etc.
But... You want to overclock, trust me.
If You decide to go 4th series, then please...
Get some cheap 4770K and a good cooling for it. There's no such thing as K processors on stock coolers. You just don't do this, it's a crime and should be punished
You don't have to overclock, but You'll always have that possibility, when You see, that Your CPU bottlenecks.