Meet The Radeon HD 6950 1GB and XFX Radeon HD 6870 Black Edition - AMD's GTX 560 Ti Counter-Offensive: Radeon HD 6950 1GB & XFX's Radeon HD 6870 Black Edition
AMD Radeon HD 6870 1GB Video Card
Sapphire HD 6870 FleX Specs | TechPowerUp GPU Database
AMD Radeon HD 6870 Specs | TechPowerUp GPU Database