What's the difference between these two Intel network cards?

[fuzzybabybunny]

I can't tell for the life of me.

http://www.newegg.com/Product/Product.asp?Item=N82E16833106121

http://www.newegg.com/Product/Product.asp?Item=N82E16833106105

 

[Auric]

GT has a newer controller and is cheaper (shipped) than the MT from that vendor so either presume it is better or at least just lower cost to make or hit Intel for the detailed specs.