@all those of you who say 30 fps is unplayable.I myself play games like witcher 2,crysis 2 with frame rates in 30s and they are very well playable.Sure,there are lags to around 27-28 fps at times but its nothing game breaking.(not game breaking enough to make me buy a gtx 590 for constant 60 fps :lol: )
In fact if you read hardware heaven reviews this is what they say in testing methodology of every card
"One of the most important aspects of enjoying a game is minimum frame rates which can have the greatest impact on the gaming experience. Due to this we also include a separate graph which details the framerates every second during a level for each of the tested games. This framerate graph allows us to show you how stable the framerates are in on a product and how often they rise towards the maximum or fall to the minimum level. We have also incorporated a 'red line' at the 25 frame per second mark to show the 'cut off' point that most people find acceptable - if you see the current frame rate line drop below this then you can expect the game to become choppy."
I completely agree with the 25 fps mark as I find games to be unplayable below that point