[wtallis]

Current ARM SoCs have all been built for embedded applications, which is why they integrate things like GPUs and radios.

The next-generation high end ARM core, the Cortex A15, will be the first one that's intended to be suitable for server use: they've added virtualization support, PAE for up to 1TB of RAM, and cache coherency to their bus to support SMP. The server-oriented implementations will be quad-core 2.5Ghz chips, of which you would be able to put at least 4 on a motherboard like this. When they start hitting the market next year, they'll probably all but kill the market for Intel Atom-based servers.