AMD Radeon HD 7550M vs AMD Radeon HD 7500G + HD 7550M Dual Graphics
AMD Radeon HD 7550M Specs | TechPowerUp GPU Database
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AMD Radeon HD 7540D IGP Specs | TechPowerUp GPU Database
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Open Box: SONY Laptop VAIO Intel Core i7 3rd Gen 3612QM (2.10GHz) 4GB Memory 500GB HDD AMD Radeon HD 7550M 15.5" Windows 7 Home Premium 64-Bit SVE1511NFXS - Newegg.com
AMD Radeon HD 7470M - NotebookCheck.net Tech
AMD Radeon HD 6870M - NotebookCheck.net Tech
Lot of 2 AMD Radeon HD 7570 1GB Low Profile DVI DisplayPort