I would think that ARM chips would use less power than Atom; but compatibility with existing software is a big selling point (as always). But this would provide

I would think that ARM chips would use less power than Atom; but compatibility with existing software is a big selling point (as always). But this would provide a pressure towards ARM servers, and therefore ARM-compatible software. OTOH, I get the impression that the bulk of the power savings are not from the CPU at all, but from virtualizing the other components. Therefore, the pressure towards ARM is much less. And I suppose Intel wouldn't be supportive unless there was a compelling long-term reason to choose Atom.