I have built 3 gaming machines, all of which have had nvidia GPU's. as of now my computer has a gtx 260 in it, it still runs alright but its getting extremely outdated. So i was looking at my price options and even though i have loved all of my nvidia cards, i have decided on a 6870 because i REALLY do not want to spend more then 200 dollars on a card, even though id love to get a 560ti. anywho i have heard bad things about ati drivers, so i was wondering, can i just slap the 6870 in and throw the drivers on. or is it a necessity to remove the old nvidia drivers? also if anyone knows where i can get myself a 560ti for <200$ that would be awesome, because other than newegg and tigerdirect, i have no clue where to shop. thank you