XFX Radeon HD 6850 Graphic Card - 1 GB GDDR5 SDRAM PCIe, DL-DVI & HDMI | eBay
XFX Double D Radeon HD 6850 1GB DDR5 PCI Express 2.1 x16 CrossFireX Support Video Card with Eyefinity HD-685X-ZDFC GPUs / Video Graphics Cards - Newegg.com
Sapphire Radeon HD 6850 DirectX 11 Video Card - Newegg.com - Newegg.com