Hi all. I'm newbie here in this forum and I have a question. I am thinking of GPU upgrading for my mac pro 5.1 mid 2012 to do some hobby video editing with Nvidia product as they have CUDA. I have been searching for many threads but still got no clue yet. If you experts are able to help me, I will be appreciated so much. I use most adobe premiere products as well as Final cut. I play Blizzard games mostly. I don't use windows OS My questions are : 1) CUDA definitely has some advantage but I still cannot get how good and fast on OSX Adobe programs compare to AMD GPUs. Can somebody give me a shot? 2) gtx 680 is hassless solution. According to some threads, Is performance gap between 980 and 680 big in OSX to pay almost double amount? 3) What do you think is most recommended GPU for mac pro to suit my condition?