Messi had been relatively subdued after his early brilliance, but he broke the shackles to burst clear and force another excellent save from Almunia as the Spanish giants refused to take a backward step.
To overcome the problem of backward-compatibility, modern x86 chips such as the Pentium are able to take x86-style instructions from old software and split them up into several smaller micro-operations which lend themselves better to performance-enhancing trickery.