SAPPHIRE Radeon HD 6950 1GB GDDR5 PCI Express 2.1 x16 CrossFireX Support Video Card with Eyefinity 100312-1GSR GPUs / Video Graphics Cards - Newegg.com
Amazon.com: Sapphire Radeon HD 6950 2 GB DDR5 DL-DVI-I/SL-DVI-D/HDMI/Dual Mini DP PCI-Express Graphics Card 100312SR : Electronics
EAH6950/2DI2S/2GD5 ASUS AMD Radeon HD 6950 2GB GDDR5 256-Bit HDMI / 2x
Sapphire HD 6950 Dirt3 Specs | TechPowerUp GPU Database