I have an nvidia gt 620 1 gb, and want to upgrade it. My processor is an intel core i5 3330s 2.7ghz quad core. So which gpu to buy, budget is around 15000 rupees that is 240 dollars. Is gtx 650ti good enough or should I get an gtx 660? There's one at flipkart.com
http://www.flipkart.com/zotac-nvidia-geforce-gtx660-2gb-2-gb-ddr5-graphics-card/p/itmddmmkmjdcbmqz?pid=GRCDDMMGFJYNGYGN&srno=b_10&ref=1a268195-d028-4756-b010-ed8e5f6b5f50
http://www.flipkart.com/zotac-nvidia-geforce-gtx660-2gb-2-gb-ddr5-graphics-card/p/itmddmmkmjdcbmqz?pid=GRCDDMMGFJYNGYGN&srno=b_10&ref=1a268195-d028-4756-b010-ed8e5f6b5f50