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GV-R699D5-4GD-B Overview | Graphics Card - GIGABYTE Global
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Unboxing: AMD RADEON HD 6990 4GB Video Card (Sapphire) - YouTube
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XFX Radeon HD 6990 4GB Core | VideoCardz.net
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GIGABYTE Radeon HD 6990 Video Card with Eyefinity GV-R699D5-4GD-B - Newegg.com
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AMD ATI Radeon HD 6990 4GB GDDR5 PCIe Reviews, Pros and Cons | TechSpot
