I'm trying to understand why other cards are priced differently than others. I can understand that certain ones are different models like a gtx 650 and a gtx660. How is it determined within the same model like theses two?
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127707
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127756
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127707
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127756