Which one of these would work best/stay coolest in a CrossFire situation?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202025
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161411
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161404
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150604
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150604
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121649
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121649
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127722
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202025
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161411
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161404
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150604
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150604
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121649
http://www.newegg.com/Product/Product.aspx?Item=N82E16814121649
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127722