Hey there, im kind of concerned about the performance im getting out of my PC. So on BF4 at Ultra settings with a resolution scale from 100% to 120% im getting about 30-40 FPS on outdoor maps. Even if I did put my resolution scale to 100% the FPS wont increase significantly, ALSO my monitor...
If your PSU is bad it WILL causes damage to your hardware, I'd say you get some better brand like Corsair, EVGA, Fractal, plus Coolmax sounds ghetto. Yeah get that Corsair, it will even help you OC cuz it more efficient than that Coolmax.
Jason found some pretty nice videos, in fact your PC could perform slightly better because of the 270"X". Also OC that G3258 and you'll see a big boost in performance.
Yes you can, not so sure if you can play them on max settings but your hardware seems good enough. Also what resolution are you playing at? 1080p I'd say Skyrim is easy > high, GTA 5 might be a bit of a challenge > medium or high > CoD AW eats some good hardware too > Medium. Try those games...