Is this a decent upgrade for the time being (currently have an X850)? Found these two at Newegg, HIS & MSI. Never bought a card from either of these, any good? The MSI card shows GDDR4 memory.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161174
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127303
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161174
http://www.newegg.com/Product/Product.aspx?Item=N82E16814127303