I have a i3 2120 processor(3.30 ghz) now i can play games like AC3,Gta 4 with some lag i want to play seamlessly(GTA 5 also) i want a graphics card below 3000 INR which can increase my gaming experience and i want to also know that i have am 15"3 inch monitor at 1280x720 will this effect my gaming experience ? please reply ASAP