It's all about a balanced budget on gaming builds, case should be practical, PSU not crappy, Storage make sense, Ram at least 8gb, GPU should be the most expensive part by far and have a CPU that can catch up to it.
For example, it makes no sense to get a 4690K if you are stuck with a 750ti, a 8320+R9 280X will decimate it in gaming performance.
Tell us what budget you have for CPU+Motherboard, if you have a GPU (or want to buy one), what's the rest of the build (or what you plan to get) and on which country are you, so we can help you out, let's not start a flame war.