Ok, I primarily use my 3.06 12 core MacPro for Lightwave 3D. I also like playing games. I currently have an ATI 5870 in my machine. Which Mac Edition card would be best for me the GTX 680, or Saphire 7950? I also want a simple drop in no muss or fuss solution. Being able to view DVDs would be nice as well. I also just purchased Apple Care as my machine was nearing 1 year old. How does installing a new card effect all that?