Gigabyte Unveils the Radeon HD 7800 Overclock Series Graphics Card: GV-R787OC-2GD, GV-R785OC-2GD. Built with AMD’s latest 28nm GPU and GDDR5 memory, GIGABYTE makes these cards with higher core clock. Equipped with GIGABYTE’s latest in-house cooling design and adapted with GIGABYTE Ultra Durable materials, GIGABYTE makes sure that Radeon HD 7800 Series is with the best speed of heat dissipation and performance. GIGABYTE Radeon HD 7800 Series also provides a number of innovative features including the latest AMD APP Acceleration, Microsoft DirectX 11 supported, AMD HD3D, Crossfire, and PCI-Express 3.0 supported. GIGABYTE GV-R787OC-2GD, GV-R785OC-2GD, guarantee gamers to have the best gaming experience with realistic visuals and fantastic gaming performance!