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ATI Radeon HD 4850 Preview: AMD Delivers Performance for the Masses
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AMD ATI Radeon HD 5850 1GB PCIe Reviews, Pros and Cons | TechSpot
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The Radeon HD 4800 - Bjorn3D.com
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AMD launches ATI Radeon HD 4800 X2 series graphics cards
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Filling the Gap: ATI Radeon HD 4830 - Silent PC Review
