I would most likely could, but its a mini itx in a nzxt N200. It is time and labor intensive to switch out the motherboar. On the good side its a 4 core at 4.0 ghz, and gaming with a EVGA 1050ti is great on everything.
Going to a I5 8500 probably would do all that much and for now the 8350k other then the core numbers is on par with the I5 8400. So i'll probably just stick it out with what I got.