661-5969 iMac 27 Mid 2011 Video Card AMD Radeon HD 6970M 2GB A1312 graphic card NB-2836W
This is a replacement video card for the 27-inch iMac released in mid 2011. This is an AMD Radeon HD 6970M with 2GB of VRAM.
EEE code: DK1Y,DK20
Apple part number: 661-5969
661-5969 AMD Radeon HD 6970M, Card, Video, 2GB - Mid 2011 - A1312, 27 inch iMac graphic card