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More Details on AMD's HD 6990 Dual Chip Mammoth Card.
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AMD Radeon HD 6990 Specs | TechPowerUp GPU Database
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Sapphire RADEON HD 6990 Dual GPU VGA Review | The ChannelPro Network
Sapphire Radeon HD 6990 4GB Technical Run Down
GV-R699D5-4GD-B Overview | Graphics Card - GIGABYTE Global
AMD Radeon HD 6990 Graphics Card Review - Overclockers
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Radeon HD 6990 review - Introduction
