I used this graphics card when I built my PC 18 months or so ago as it was a good compromise of price versus performance as the newer 580 range of graphics cards had just been released and the 570 cards had dropped in price a little.
I paired it with an I5-2500k processor and plenty of RAM etc, as I had one thing in mind at the time, making sure it would play Battlefield 3 with everything on high!
Since I built the PC the whole thing has performed very well indeed, every game I have thrown at it has be playable at high resolutions with all details and textures etc set to high and everything looks incredible, BF3 is truely a mind blowing experience in terms of graphics and this card handles it very nicely indeed.
I have a dual monitor setup and this card happily drives both monitors flawlessly.
I also use the computer for a lot of video encoding work and as this is CUDA compatible software which supports it uses it nicely, which further improves encoding times, which is a godsend when doing batches of encoding!
Currently you can pick this card up for a shade over £200, so although it is an older generation card, for the money you can get a huge amount of performance which really does make it good value.