xFriarx :
In GPU intensive games (generally SP games with lots of eye candy) it will be fine. In CPU intensive games, (generally large FPS MP games/RTS games) it may be bottle necked a little, but not too much (you still get better performance out of the 7870 over a 7850 in that situation).
And yes, it would be a worthwhile upgrade over the 560.
And yes, it would be a worthwhile upgrade over the 560.
Could you link me a good 7870?