My friend has a tyan KW8 motherboard with dual opterons in it. It runs on an amd 8000 chipset. However we have found out that there is a problem with the AMD agp tunnel and nvidia and ati graphics cards. When you do anything that requires 3d the computer freezes and restarts. I have looked around and this is a know problem. We've update all the drivers, bios on the board etc. but the problem is still there. Has anyone found a work around for this, since AMD seems to have given up trying to fix the problem.