If you are looking for a high thread Intel CPU for video/audio transcoding tasks as well as gaming, but you don't plan to overclock, I recommend you consider Haswell Xeon cpus. See below.
Xeon E3-1230V3 - 8 thread – 3.3Ghz - no iGPU - $265
Xeon E3-1245V3 – 8 threads – 3.4Ghz – HD P4600 - $290
i7-4770 – 8 threads – 3.4Ghz – HD 4600 - $320
i7-4770K – 8 threads – 3.4Ghz – HD 4600 - $350
You can be saving about $55 by purchasing E3-1230V3 instead of 4770 (non K). Most brand mobos should take the Xeon since these are essentially the same chips (check with OEM first just to be safe). The only difference is the TDP and slightly lower clock and that it is missing the iGPU HD 4600. If you want the iGPU, you can consider E3-1245V3, with HD P4600.
Unless you plan to overclock, I wouldn’t waste money on buying the K chip + Z87 board + cooler. At the end, the extra performance = much higher price. Those of you saying that it is just a bit more expensive, please describe "a bit more." If you opt for a Xeon chip + H87 board + no cooler, that would save you $100+. Do you research first so that you don't miss out on any feature that you may use (i.e. ssd caching), but if you know what you want, and you plan it out from the start, you can save a lot by getting the "sweet spot" configuration.