For iMac 27" A1312 Mid 2009 2010 2011 upgrade NVIDIA K4100M 4GB GPU Video Card | eBay
SOLVED: What GPU's are compatible with iMac 27" 2011? - iMac Intel 27" EMC 2429 - iFixit
iMac 27" mid-2011 GPU upgrade
2GB Graphics Video Card HD6970M Replacement, for iMac Mid-2011 27 Inch A1312 Desktop PC Computer Core i5 MAC814LL/A MC814, AMD Mobility Radeon HD 6970M GPU Upgrade MXM Board Repair Parts
iMac 27" mid-2011 GPU upgrade
Upgrading GPU Graphics Card on iMac 2011 - YouTube
For iMac 21.5" A1311 Mid/Late 2011 6770 AMD upgrade Nvidia K610m 1GB Video Card | eBay
Hotechon Modded Big 3 Pipe Gpu Heatsink For Imac 27" Late 2009 To Mid 2011 Graphics Upgrade - Laptop Lcd Screen - AliExpress
Apple iMac 27" with a failed Graphics card is getting surgery today... - Jappel Tech - Home Theater, Savant, URC, Lutron Shades, Audio Video, Tech Support, Managed Services
iMac 2011 GPU Upgrade
How to Upgrade/Replace GPU Graphics Card on Mid-2011 21.5" iMac - YouTube
Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
Picked up this iMac (27", mid 2011) i7 @ 3.4GHz , 16 gb ram , 256 SSD in excellent condition for $210. Should I make any upgrades ? GPU, bigger SSD? Thanks : r/LukeMianiYouTube
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen
Amazon.com: 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