[changoplatanero]

If google has 10 million servers then a 2% improvement would be like freeing up 200,000 servers. That's a significant amount of value added!

[DannyBee]

It usually makes more sense to think in terms of cores rather than servers, because server density has always been increasing :)

[kevincox]

If Google has 100 data centers they can sell 2 of them.