GIGABYTE Technology Co. LTD., a leading manufacturer of motherboards and graphics cards, is pleased to present overclock edition of AMD Radeon HD 6570 (GV-R657OC-1GI) and AMD Radeon HD 6670 (GV-R667OC-1GI). Built with AMD's latest 40nm GPU and DDR3 memory, GV-R667OC-1GI and GV-R657OC-1GI has higher core clock. In addition, GV-R667OC-1GI is equipped with GIGABYTE's latest in-house cooler design. With this new cooler and GIGABYTE Ultra Durable 2 materials, GV-R667OC-1GI runs much cooler and quieter than standard HD6670 graphics card does. Also, GV-R667OC-1GI and GV-R657OC-1GI provides all innovative features including AMD's 2nd generation support for Microsoft DirectX 11, AMD HD3D, App Acceleration, Crossfire and Catalyst for rich, realistic visuals and fantastic gaming performance.