Hi everyone new here. I am getting my first mac and have been doing alot of research. I searched the site before asking my question. Seems that the post where old also. Question 1. They do offer the geforce 8800 GT now for MAC PROs the current new one that Im getting. It also says that it can hold up to 4 different graphic cards. Lets say I had 2 or 4 geforce 8800 GT graphic cards would it work SLI? If only one card was being hooked up to 1 monitor. Well than I still have the other card or cards. Gaming wise , rendering would the extra card improve my game rate and fps? I am look at the mac pro, 3.2 Quad 4GIG ram geforce 8800 x 2. Because when you build a mac pro online it overs ATI HD 2600 x 4. So I would assume it would be more of a crossfire or SLI type thing than just being able to have 8 monitors hooked up. Correct? Combined or just for monitors? Major issue has been bothering me. Question 2. Also do they all have to be the same card or can one be an ATI, one a Geforce? Question 3 Since the mac pro have pci-e 2.0 using bootcamp couldnt you just install like a ATI HD 3870 XT card and use it under windows and install the drivers or not? Question 4 The specs for the mac pro say, 2 PCI-E x16 2.0. Than it has 2 more slots PCI-Express x 4 Interface slots. Could someone explane to me if there is a difference. Or is it just saying there are 4 PIC-E 2.0 slots. Which would make more since because they would have to be , to be able to install 4 ATI HD 2600 cards because they required PCI-e 2.0. Just the spec are hard to read on the Microcenter print outs. But when you go to order a mac pro online it gives you the option for 4 x ATI HD 2600 XT, but only gives you the option for 1 geforce 8800 GT. Maybe you would just have to call because they would not think the adverage customer would buy 2. So if I buy the geforce does that mean the other 3 slots are useless. I need someones help fast, you can see I am confused and stressed, any help would be appericated. Thank you. I am trying to get this all on Monday for my job, and school. First time learning about a mac, Ive done alot of research and learning on my own but I need someones help on this. I would really appericate if someone would help me with this and save me a headacke so I can make a discussion. Thank you in advance.