On Mon, Dec 12, 2005 at 11:18:27AM -0900, Greg Madden wrote: > Very well could be, maybe I should have said Athlon Amd64 vs Opteron. Tyan > seems to make a distinction on their matrix for main boards. > http://tyan.com/products/html/systemboards.html Athlon64 and Opteron are both AMD64 CPUs. So are the 64bit Semprons and Turions. Len Sorensen