Hi guys, please forgive my ignorance, can someone help me with a question? On my 2011 iMac 27” 32GB RAM and i7 2600, I have the NVIDIA K610M 1GB graphics card installed and I want to put in the Nvidia K5000M 4GB, is it possible? Would it be like taking one out and putting in another? I mean modifying the software!!! I understand that it means changing one for another.