It seems that your CPU is i5-4440.
Well if you are playing on that monitor-which is not 1920x1080, you will have very high fps in cs:go (above 144, even tho your monitor is max. at 75Hz).
About GTA online, I can't tell you exactly, but it should be playable with above 60FPS on high.
Best bet would be to take a look at gameplay videos with similar systems.