[presootto]

This POWER8 board has been in development for a long time and will only be used if it turns out to be cheaper then the Intel/AMD alternatives.

The platforms team at Google is also developing an ARM solution. They have GPU's in testing as well.

[AnthonyMouse]

There is also the distinct possibility that they would use both. The best hardware for processing search queries is not necessarily the best hardware for hosting map tiles, etc.