so im thinking of changing my gpu. i have a gtx260 core 216. i want something that has dx 11 of course, but dont know what is equal to my current card and what is better than it. i have a 25 in 1080p hp monitor using hdmi, and play most modern games like metro 2033 and dirt 2 ect ect. right now i can play them all on high settings except for maybe 2 games, but i know that wont last much longer with future games. i would like a card that is at least 25% or more, better than my current card. price range is between $200-$300. i dont think i want to sli or crossfire as my board only has 1 slot, but i may change boards later that will support sli. i prefer nvidia over ati just because of an experience i had with an ati 4890 (seemed that my 260 ran games smoother which is why i kept it and sold the 4890.) my psu is good (check sig for machine specs). any thought would be great.