Sure, there's not much chance of popping down to your local hypermarket and picking up something with a Power7 roaring inside, but there's also nothing stopping you from a bit of vicarious investigation, now is there? IBM's eight-core, 1.2 billion-transistor Power7 chips have begun shipping as promised, with the entry-level Power 750 Express starting at a few bucks over $34,000. That offers you some truly supreme computing powe