iXBT Labs - HIS 6950/6970 Fan Turbo 2GB and HIS 6850 IceQ X Turbo 1GB Graphics Cards - Page 1: Introduction, specs, architecture
XFX Double D Radeon HD 6850 Video Card with Eyefinity HD-685X-ZDFC - Newegg.com
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XFX Radeon HD 6850 Review | bit-tech.net
Sapphire HD 6850 Toxic reviewed
AMD Radeon HD 6800 Series Is the New Midrange Graphics Champ | PCWorld
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Official AMD Radeon HD 6850/6870 Performance Specs - Overclockers
Sapphire HD 6850 Toxic review | 54 facts and highlights
VisionTek HD 6850 Specs | TechPowerUp GPU Database
XFX HD 6850 Black Edition Dual Fan Specs | TechPowerUp GPU Database
XFX Double D HD 6850 Specs | TechPowerUp GPU Database