If one takes the ideas that heterogeneous computing is primarily about efficiency (read: low power usage), and that ARM, with its legacy in mobile phones, is known for low power usage, then a future that includes AMD parts with actual ARM processor cores running them suddenly seems likely.

FORBES: AMD Woos Developers With Promises Of Efficiency

The manufacturer can shift energy usage to periods when power prices are low to offset the production losses resulting from this arrangement, improving his or her bottom line.

FORBES: America's Smartest Power Grid