SUOrange, actually, if I'm not mistaken, the reverse is true. The 760 MP chipset already has full support for 64-bit PCI etc, the MPX will be basically the exact same chipset, without the support for 64bit PCI devices. Unless you're planning on running truly high-level stuff, you won't need the 64 bit device support right now anyway. Of course, if you do need the 64 bit device support, you can afford to shell out the cash for the full Tyan board.