My system specs
Intel pentium g2030
Corsair vengeance 8gb ddr3 ram.
And i wanna buy a gpu so which one should i buy a gtx 750ti or 1050 and which one gives the better performance
With that cpu the game will not run well no matter what GPU you use. It's a slow dual core CPU. The stutter and low FPS will make the game unplayable. For GTA V to run smoothly you need a decent CPU with 4 threads.
So you are saying that i wont be able to play gta 5 at least in med settings with gtx 1050 at 1366 *768 resolution
Resolution will have no affect on CPU performance, vice versa. Very few settings actually affect the CPU load, those ones like View Distance and FOV. The other graphical settings are purely dependant on the graphics card.
So the answer to your question is it plays, just at 30 - 45 FPS with lots of stutter . If you want more bearable gameplay in GTA V you'd need to upgrade the CPU.
So you are saying that i wont be able to play gta 5 at least in med settings with gtx 1050 at 1366 *768 resolution
Sandeep_62 :
So which gpu is the best to buy for better frame rate gtx 750ti or gtx 1050
With that cpu even a GTX 1080Ti will not run that game at a playable FPS. If you want to run GTA V you will need a better CPU to go along with either of those GPUs.