If you aren't opposed to buying AMD, I would say you might want to look at the 7870.
Specifically the msi twin frozr 7870 which is currently $279.99 with a $20 mir, so $259.99 after mir. It will outperform a gtx 570 and it should overclock better as well. Plus it has 2gb vram, uses less power, and should be pretty quiet. And it comes with a free game.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127662
Specifically the msi twin frozr 7870 which is currently $279.99 with a $20 mir, so $259.99 after mir. It will outperform a gtx 570 and it should overclock better as well. Plus it has 2gb vram, uses less power, and should be pretty quiet. And it comes with a free game.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127662









