I currently own a 4870 1gb. I and I dont wana drop 390$ on a 5870 but I really like the 5850 and I can even cf when the prices come down. The only downside about my mobo is a http://www.newegg.com/Product/Product.aspx?Item=N82E16813128387R so it will only run at 8x when i cf. Will I see a big performance because of this? I will be upgrading to a 720 x3 and oc very well.