MSI Shows New Radeon RX 480 Gaming Cards, with an 8-pin
 

Today MSI is announcing the latest entry in the Gaming X GPU line with the Radeon RX 480 Gaming X 8G/4G cards as well as non-X variants. The main difference between the non-X and X cards is in the core and memory frequencies, with the X card having the higher performance. In return, there will be a small price difference between the two variants.

http://www.anandtech.com/show/10520/...0-gaming-cards