Your CPU is just about at the minimum requirements, while your GPU is a bit better. Chances are good you'll experience some framerate dips which are CPU related, but I expect it'll run well enough.
ok thanks guys. also, i get the odd micro lag on gta v. is this more likely related to the old but powerful gpu im running currently than the cpu?. im upgrading to a 1050ti later this week
in benchmarks on gta 5 i get 59fps a lot of the time.
Yes , take a look with Intel pentium G4400+Gtx 750Ti https://www.youtube.com/watch?v=4syBvvYZnZw and another much lower than your specs Q9400 - 4GB RAM - GTX750 https://www.youtube.com/watch?v=cffpb87JiFc