Is it possible?
GTX260: http://www.overclockersclub.com/reviews/xfx_gtx260_black/
GTX8800: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150205
GTX260: http://www.overclockersclub.com/reviews/xfx_gtx260_black/
GTX8800: http://www.newegg.com/Product/Product.aspx?Item=N82E16814150205