Oh, nothing, except that it doesn't implement design concepts Intel and AMD began introducing *fifteen years ago*. Such as out of order execution, which coupled with poweful pipeline architecture allows the CPU to perform several instructions per clock cycle by using several parallel ALUs, a branching unit and whatnot. Sony instead shoved half a dozen inferior cores on one chip, provided overpowered and overpriced video hardware for fanboys to jerk off to (as if graphics are the only thing that benefits from powerful hardware) and slapped a ridiculous price tag on a system that would likely deliver less SPECmarks than a clocked PIII Coppermine.
Really, these consoles get more unimpressive with every incarnation.