In this video I show how to replace a graphics card in a A1312 27" 2009 iMac from start to finish. For more resources on upgrading your Graphics Card in your iMac, check out Mac Rumors for a list of compatible GPUs. https://forums.macrumors.com/threads/2011-imac-graphics-card-upgrade.1596614/ Warning* This video is recommended for technicians with previous experience. iMac GPU replacement is one of the more difficult parts to replace in an iMac and can cause more damage if not careful disassembled and reassembled properly. Web: https://iRevive.com/ Facebook: https://facebook.com/iReviveLLC Instagram: https://instagram.com/iReviveLLC Twitter: https://twitter.com/irevivellc Tools used iMac Suction Cups for glass removal: https://amzn.to/3q7fz9G Preferred Screwdriver Kit: https://amzn.to/2Xo7voG Spudger Pry Tool: https://amzn.to/38w2Irz iMac Stand used: https://amzn.to/39doiQK Recommended Thermal Paste: https://amzn.to/3s9sk5i If you wanna leave a tip, feel free to do so here - https://paypal.me/iReviveLLC