Radeon HD 7870 royalQueen: CGAX-7876F - PCI Express 3.0 - 2048MB - GDDR5 - 256 BIT
Radeon HD 7870 royalKing: CGAX-7876O - PCI Express 3.0 - 2048MB - GDDR5 - 256 BIT
Radeon HD 7870 royalAce: CGAX-7876SO - PCI Express 3.0 - 2048MB - GDDR5 - 256 BIT
Radeon HD 7870XT jokerCard: CGAX-7876XT - PCI Express 3.0 - 2048MB - GDDR5 - 256 BIT