http://www.newegg.com/Product/Product.aspx?Item=N82E16834232132
http://www.newegg.com/Product/Product.aspx?Item=N82E16834152554
one under 900 and one is a lot worse... the one that's a bit over 900 will preform about twice as good as the other one in a lot of circumstances... imo get the ones that's a bit above 900...