http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028 - >
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202025
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028 - >
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202025
Yes. You will have a lot of headroom, that GPU would be fine with 450W