AMD and Intel have been competing in the PC and the server world for the past 10 years. However, with the emergence of ARM in this segment, the two companies are adopting arther different strategies. Intel is working hard to improve the power efficiency of its chips mainly through improved process and manufacturing. It wants to be competitive in the tablet segment where it has gained very little ground so far.
AMD is not targeting the tablet segment but rather focusing on the server market. It takes a bold bet by combining x86 and ARM architecture on a single die called Skybridge. This is a very daring and pragmatic approach. Acknowledging that ARM is continuously gaining momentum in the server industry, AMD is trying to get the best of both worlds x86 and ARM.
Other targets for the Skybridge chip are networking products.