It's great to see that dedicated hackers can get their hands on the hardware and data-sheets needed to design and manufacture these kind of high performance projects. There still remains one huge barrier before we'll see a large number of projects like this: the costs of the equipment used to validate the signal integrity on high speed digital systems like this immense. I'm hoping that soon enough Moore's law will work it's magic in the prices of signal validation equipment and at least a few hacker spaces will be able to gather enough cash to pony up for a 10 GHz scope and a nice logic analyser.