I have a Dual 2.5Ghz PowerMac G5 and I'm in the market for a new Video card. My G5 is from around June 2004 and I have been using the video card that came with it which is a ATI Radeon 9800 XT. I was searching through the Apple store and two Video cards (not that there is a huge choice) hit my eye. The two cards are ATI Radeon X1900 GT Mac Edition and the ATI Radeon X1900 XT Graphics Upgrade Kit for mac pro. The first one, althoguh with less memory of the two should definitelly work. The ATI Radeon X1900 XT Graphics Upgrade Kit for Mac Pro I'm not sure about. I know before I get flamed when it says MacPro I would just like to state what I thought about it. In the specifications for that card it lists "Mac Pro with available double-wide PCI Express slot or two standard slots." I'm not sure what the XT stands for but my orginal card had this destinction. Since it says you can also have two standard slots I wonder if this would fit in my G5. Now the next part of my question is in regards to installation. Lets assume for a second that both cards would work properly in my PowerMac. How labor intensive is this sort of operation with adding a new video card. By intensive I dont just mean the amount of time but also how difficult the procedure is with a Mac. I have some experience installing video cards on my old PC's years ago back when they used to make the Voodoo cards. I found that to be fairly easy and it worked fine. How does that compare to a self-installation on a PowerMac. I rather do it myself if its easy enough instead of shelling out even more money to the Apple store and losing my computer again for a while after I just got it back from repairs. Any help will be greatly appreciated. EDIT: Also if anyone has any experince with these Video Cards or similar ones feedback would definitelly help in my selection.