nikos123211 :
smorizio :
most games are written for amd or nvidia gpu. you may have better gaming wiith nvidia gpu.
I don't say you are wrong but my graphics card its old and slow, can't a 7700k be faster than an old graphic card?
Recent marketing wars have distorted the perceptions on the value on CPU and GPU in gaming. If you want to play games on your pc, you should primarily go for the best GPU that makes sense in your build. The myth that 7700k magically can improve your gaming was intel's effort against the new Ryzen lineup. Fact of the matter is that for gaming CPU matters far less than your GPU.
For example, if you are going to game in 60fps (what the overwhelming majority of monitors support), you should buy a CPU that can push that, and then buy the best GPU you can to improve the quality of those 60 frames displayed per second, along with some performance for future games. For example, for the price of a 7700k a Z series motherboard and a beefty cooler to overclock, you can instead buy a Ryzen 1400 and a GTX 1050ti which delivers much higher performance than the 7700k alone with the onboard graphics.
Another example is if you buy a 7700k, a Z270 motherboard and a 60-70$ cooler with a GTX 1060, you can instead buy a Ryzen 1600 and a GTX 1070 which delivers much better gaming performance and so on. Only when you have the best GPU you can buy is that getting better CPUs matter, and even then you might want to get better RAM and SSD before that.