[citation][nom]athulajp[/nom]Do people really buy those all that much? I mean, integrated graphics on an APU is about as good as those cards.[/citation]
I just redid my computer for work. It is all office workloads, so I only got a Pentium G2020 which is more than enough horsepower to run office, browse the web, and crop/fix the occasional photo. But I needed a discrete GPU for the sake of having proper duel monitor support. I ended up going with a GTX610. Gutless card, but it was the cheapest GPU I could find with 2 DVI ports which was also passively cooled. Works great for what I need it to do, runs cold, silent, and low power, and lets my 2 old apple cinema displays stretch their legs without issue (or adapters).
Onboard graphics (be it Intel or AMD) are 'good enough' for home users (my wife runs on HD4000 without problems for everything she does), but if you want multiple displays, or to do other specialty things, then you still need a discrete GPU.