the amazon deal is horrible. http://www.newegg.com/Product/Product.aspx?Item=N82E16814131148
there's really no point in getting over 512mb at that resolution but the link i posted is a 4870 1gig. Only recommended that card since its on sale and is priced at the same card with 512mb.
9600gt 2gig is a waste. The 9600gt cant even use 2gig of memory. I would not recommend that card at all.
If you really want to save money a 4850 is the best option in my opinion.http://www.newegg.com/Product/Product.aspx?Item=N82E16814127414