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AMD Radeon HD 7660G - NotebookCheck.net Tech
AMD Radeon HD 7670M - Not working on Windows 8.1 - Microsoft Community
Sony Singapore - AMD Radeon™ HD 7670M* with 1GB VRAM built-in The Power Media Dock™ has AMD Radeon™ HD 7670M with 1GB VRAM built-in. This high-performance graphics accelerator assures crisp and smooth