If you want to game, clockrates are not really the way to go anymore. While there are some games that are CPU bound, but even these can live with a comparably slow cpu (e.g. I am getting brilliant fps with a 6 year old i7 920 on stock clocks + a GTX 780). But if you choose a cpu now, there is no reason not to buy something fast. It just means you have more years to go on without dropping performance. If you edit videos or use photoshop a lot, that is a whole other matter...