Takaya :
I am from europe. Here is little difference between K and non K price. Not really big but there is. My question was about the overclock. If it is really worth. Because with K I would need to overclock thus Id need to buy cooling aswell. Factory cooling wont work as far as i know.
Actually, the 4690k has the same stock performance as the 4690; the only reason to get the k series is to give you the
option of better overclocking. While you may not need that option, it is a nice thing to have if you ever desire/need the option in the future. If the difference in price ins't too significant, and you're fine with spending the extra cash, I would advise getting a k series. It would be the most cost effective for you, if you ever changed your mind on OC'ing. When it comes to the CPU cooler, you really don't need a new cooler if you're not OC'ing. If you decide to OC, then get a new cooler; otherwise, the stock one will be fine (albeit a bit noisier than something like the CM Hyper 212 EVO).
For what you're doing, the 4690/4690k is more than enough, and won't undercut you on performance; however you can get a slower CPU to save money, and still have perfectly fine performance with what you're doing. The 4460 is a cheaper chip, and you will have plenty of performance from that as it is; no need to OC with your games. You can look into the FX-6300, but note that they are really triple core processors with multi-threading, so the performance of the 6300 is typically going to fall short of the i5 in single threaded processes, unless they are OC'ed; and, honestly, the price of OC'ing an FX-6300 (with a new CPU cooler) will put you about $50 shy of the i5-4460 here in the US. I'm not entirely sure if MMORPGs utilise multi/hyper-threading, so the FX chips may/may not prove to be worth the money saved.
If you were to pick only between the 4690k and the FX-6300, I'd go with the FX. But, since the 4460 is available, and with a smaller price gap to an OC'ed 6300, I'd recommend the 4460 with a Z97 MoBo. That's my two cents.