I have one.
It's good... decent performance however I find that in games you get the best performance by using high settings as long as you use 1600x900 res. It tends to stutter a bit more on 1920x1080 but I assume thats because of the VRAM?
I cant really tell much of a difference between 900p and 1080p while gaming anyway, its still much clearer than a console for example.
I am now entering the wonderful world of PC gaming