Imac 27" 2009 graphics card replacement Tags: Radeon Graphics Cards iMac Graphics Last response: July 14, 2011 2:56 AM in Graphics & Displays Share StanSmithl July 14, 2011 12:24:36 AM Hello, I've got a iMac 27" late 2009 and I want to replace my Radeon HD 4850M 512MB withe newest 6970M 2GB board. Has anyone tried this? More about : imac 2009 graphics card replacement COLGeek a c 206 U Graphics card July 14, 2011 2:56:42 AM Unless the new video card is "Mac compatible" it will not work. Sorry. You can't stuff a PC GPU into a Mac. There are firmware (software and sometimes hardware) that are the root of this problem. Can't find your answer ? Ask ! Publish Related resources Upgrade video card Imac 27 ''late 2009 Forum 2012 27 " iMac for gaming now and future Forum Apple iMac Display Problems Reported Forum Two 22" monitor with 27 " iMac : Gaming Forum Can a iMac use two additional monitors? Forum Apple is offering 21.5 inch iMac with i5 2.5Ghz or 2.7 Ghz. Which one to opt for? Forum iMac vs Mac Pro Forum Dumb question... I'll ask anyway... Imac GPU ? Forum Ticking sound in my audio IMAC Forum IMac or self build PC Forum Q6600 OC'd with 5850 vs. Apple iMac i7 with 6970m Forum Good reasons to buy an Imac ? Forum Asus gtx560ti directcuII-broken Forum 4year old Dell, new computer or just card? Forum How can I reset my ATI graphics card's overclock settings before the computer st Forum [Solved] How can i tell if my video card is working Forum Finally a 6870x2 card! At a stupidly high price! Forum Graphic card low performance Forum What is the best Graphics cards photoshop Forum Intel Q8400 Graphics Card help!! Forum More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !