Allright, my actual specs:
Mainboard: ASRock 97H Performance,
CPU: i7 4790k 4,0 Ghz,
RAM: 16GB XMP
Power: Seasonic G series 550w 80plus Gold
AND
GPU: GTX 470 - which I'm planning to change.
I was thinking about GTX 970 4GB or 2GB. Problem is my budget is limited now and 4GB is a bit too...