AqUa24 :
Okay, i will keep have 270x, 250zł is nonsense for me to have got a little fps more. Do you think, will have I project c.a.r.s on high?
I don't know. I do know that a 270x is a solid GPU. I also know that though it's said that GPU is a limiting factor in many games, that's assuming you're using a crappy one... A 270x isn't a crappy GPU.
To be honest, if you did make the move up, you "may" end up with slightly higher settings (May) at the same or lower fps then what you're using now.
I personally consider a R9 270 the perfect middle ground for GPU, and you exceed that with the 270x. You'd be surprised, but better hardware doesn't' always mean better gaming.
I got guild wars 2 for my ol'lady and I. She has a "FX 6300 / HD 7850", my specs are in my sig... I watched her playing and her game was running much smoother then mine... I was like, "the hell?". I had to basically lower settings to about the same as hers to get the same level of smoothness even though I'm on a much better system... I also disabled GPU controlled settings, allowing the games to handle that, and stopped monitoring everything, such as fps/voltage/gpu usage... and so on.
Point being, don't assume that moving to new hardware will always equal much better game play, because it just doesn't work like that. The devs are worried about making games run best on most systems, not the ones on the more extreme ends.