It all depends on what you intend to be doing. For gaming, you don't need anything extreme so I would recommend something like the
Intel Xeon E5-1620 V3
however, if you plan on using your pc as a workstation you will want a higher end cpu. I do intensive VFX editing and personally I am looking into getting the
Core i7-5820K due to the fact it has 6 cores over the traditional 4, and it has a much larger L3 cache than its competitors in that price rage. However, if you have a bit more to spend and want a more "professional" rig I recommend a higher end cpu such as the
Intel Xeon E5-2630 V3 or the
Intel Core i7-5960X due to its 8 cores.