Actually heres a good one, same card just 512 MB and you save $40
http://www.newegg.com/Product/Product.aspx?Item=N82E16814102810
And heres a good motherboard for $80
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131340
No on board video, but it should perform really well.
So with these two options the price would instead be $675 before tax/shipping which will fit well within your budget and still give you extreme performance.
Tease.







