A GTX460 is a minute upgrade from a 4870. Don't waste the money. If good 4870s were still around, and the price had dropped, I would suggest getting another one, unless you were playing Blizzard games, which don't support crossfire. Get a 470/570/560/5870/6950 in no particular order. I play with a 4870 1gb, and don't have any problems on games other than blizzard ones, which stinks, since that means my other 4870 is utterly useless. I play at 1650x1080 though.
...what's with the dots?