So I am thinking about getting a third monitor for my 2010 Mac Pro. I tried doing this with my tv, but apparently I need an active adapter or another GPU. I saw this and am wondering if it will do the trick. If it doesn't work, would a GT 120 work in the new Mac Pros? And if I did end up running 3 monitors on my 5870, would that slow it down at all? Also, I am considering getting more RAM. I have 16GB right now and would go up to 24GB. I do a lot of After Effects and right now it is limiting the amount of cores I use because of RAM. If I went up to 24GB, I would be able to use all cores. I only have enough in my budget to get either the monitor setup or more RAM. What are your opinions? EDIT: Also, if I got a second GPU, I would be able to use my TV as a display for my computer again.