NewEgg has the RADEON HD 6670 1GB Video card on sale for $69.99 with a $15
Rebate.
You end up with a price of $54.99 + Tax with Free shipping and a Free game
coupon for Dirt3.
LINK: http://www.newegg.com/Product/Product.aspx?Item=N82E16814161386
Specs in the Wiki. Enjoy.