2 GB Graphics Video Card GPU Upgrade Replacement for Apple iMac Mid-2011 A1312 27 Inch Core i7 3.4 i5 3.1 Desktop Computer, New AMD Radeon HD 6970M HD6970M 2GB MXM Board Repair Parts
Best Graphics Cards for Money: December 2011 (Buyer's Guide for Christmas) | VideoCardz.com
AMD - What's the Best Graphics Card of 2011? According to PC Magazine it's the dual-GPU AMD Radeon 6990! Simply put, it's the fastest discrete video processing you can get! Check it
New amd radeon hd6970m for iMac 27" 2011 a1312 HD 6970m Graphics Card GPU 2gb | eBay