gaming, the i5 CPU's are the best for money right now and will perform so close to the i7, without an overclock and with an OC, even better. If you want to do more then just gaming, i.e. streaming, Video editing ect.. then the i7 will do better at that, but for the price and performance the i5 4670k will perform so close, there is almost no difference at all. If you do overclock it may outperform but not by a whole lot.