Reflow on HD6750M graphics card | MacRumors Forums
Late 2009 iMac 27" Video Card Repair — 4850 — 2nd Bake - YouTube
Amazon.com: Valley Of The Sun Genuine Graphics Video Card Replacement for Apple iMac Mid-2010 Core i5 A1312 27-Inch MC511LL/A MC511 Desktop PC, ATI Mobility Radeon HD 5750 GDDR5 1GB MXM VGA Board