its fps that matter, some people dont see slight slowdown but i hae come custom to having 60fps+ so if i have a game thats dipping between 40-60 fps it bugs me..and i usually only do one video card so im changing it out every 6 months to a year lol. if its 30 fps or under i wont play it tell i can get better fps
thats why i dont play console, either crappy graphics at 60 fps... or a game with good graphics but only 720p resolution and 30 fps and dipping into low 20's ...no thx.