I'm building a dual setup on a used Tyan Tiger MP S2460 MB a friend of mine purchased with dual 1800 processors. To my surprise the cpu's were XP's, not MP's. My question is: will the functionality of this board be impaired by running XP's, instead of MP's ? Also, my friend wants to install a piece of hardware that requires a dual processor board, (a Canopus Rex video card), and am wondering if this card will require an MP processor. I've poked around this forum a bit, and determined that the chips are early XP's, (4th L5 bridge uncut), so they will run, but will they be somewhat limited in their functionality, over that of a board running MP's ? This is my first attempt at building a dual setup, and dont like these kinds ofd questions so early in the process. Any help or advive will be greatly appreciated. Also, Tyans website says the 1900 is the fastest chip this board will run. Anybody know if it'll run faster models ?