I have been running this motherboard for a few weeks now using 2 1700 AMD XP CPU's under WinXP Pro . Had stability problem in the beginning but it has been running stable after I finally dump the onboard sound for a PCI soundcard. One other thing to remember is that it doesn't have any built in USB , though it comes with a USB 2.0 card. This might limit the number of slots you can use . Other than that, Im pretty happy with my first dual CPU box.