well then you have a problem. the cpu bottlenecks the graphics - not a lot, but you might have lower fps then banchmarks. you'd need at least a i7-4770 or i7-3770 for it.
if you dont get huge drops and you can play all the games you want i wouldn't worry about it. if you increase the detail levels and AA that would tax the graphics (without more load on the cpu) more so you'd get the most out of it anyway.