I5 4670k

The processor itself is really good. I installed it on my system with a Thermalright HR-02 Macho Rev fan since the provided too little cooling and the processor is a bit hot when Zokken.
As with all other processors halt installation is fairly straightforward, too. Can overclock to him with the new boards also quite simple, it can be without problems on 4.1 Ghz high overclock.

A little tip: Holt always boxed processors, as you still have this guarantee, even if their plus brings you another fan. The unboxed processors usually have no guarantee.