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Meet The 6990 - AMD's Radeon HD 6990: The New Single Card King
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Radeon HD 6990 review (Page 5)
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AMD Radeon HD 6990 Specs | TechPowerUp GPU Database
Sapphire RADEON HD 6990 Dual GPU VGA Review | The ChannelPro Network
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AMD Radeon 6990 & 6970 CrossFireX Review @ HardOCP | VideoCardz.com
