Hexus.net have posted up a review of the MSI 850 Pro5 Motherboard. Heres a snip:

    "So what have MSI delivered to us in the form of the 850 Pro5? Well the name gives it away slightly. The 850 Pro5 is based around Intel's i850 core logic chipset which pairs the CPU with RAMBUS RDRAM. This is currently the highest performing Pentium 4 solution to market at the moment; however the competition is increasing with VIA releasing their P4X266 DDR chipset for Pentium 4 which offers comparable and in some applications, better performance than i850."