(Beware: possibly inane question forthcoming.) Does the 4890 need to be installed in the Mac Pro when you use the ATI Flashing Tool to inject Natit? (In other words, does the tool make a modification to the card, only the OS, or both when it installs Natit?) I ask because I don't have enough power connectors at the moment to have both the 4890 and the x1900 installed simultaneously (I have only the original x1900 6 pin "proper" connector, and one 4-pin Molex Y splitter.) Oddly, I couldn't find a specific answer to this after reading about 30 pages of the main 4890 thread. Many thanks.