I currently have a 4890 in my Mac Pro now and concerned after the most recent patch with the issues people are having. I know that the new machines are slated for June, but I would rather not hold my breath for some new awesome card to come out. I am sure they will have a newer card, but it will still take time to get the ROM. So do you think it is worth upgrading to the GTX285 and selling my 4890? It would also be a lot easier because I wouldn't have to use hacked drivers to use my 120 as a Physx card.