Unless they've come out with a new version, there's no such thing as an MX 400 Pro. There's the GeForce 2 GTS Pro, and then there's the GeForce MX400. The MX400 is a good bargain card. $55 is a decent price on it. It's not a bad card, just a lil slow for newer games. The GTS Pro is better. It's one of the upper end GF2 cards. It's a good deal faster. $55 is a steal on that one. Which one is it?