The card is mainly differ in the accessories included features. For gamers there is nothing better, especially if you play competitively.
For details available in the product description, and it really has advantages!
Whether you need this additional model I do not in any case have to decide if you buy the card.
The sound has a little disappointed but not surprised me, supra, it is not worth the money for this purpose.
Otherwise it has 7.1 What the new STX 2 also offers.