Start64!Apple might have surprised its rivals by stuffing a 64-bit A7 chip into the Apple iPhone 5s. Right away, there was talk that next-gen Android models would also use a 64-bit architecture. But despite those lofty expectations, the word is that Samsung and other Android manufacturers have pulled back on the idea of a 64-bit mobile CPU powering Google's open source OS.

According to media reports out of Korea, one problem is that Android does not fully support the 64-bit silicon, although Google is said to be working on resolving some of the problems.

The other problem revolves around the D-RAM market. Costs of producing mobile D-RAM memory has been on the rise and the Korean media is reporting that to produce the kind of D-RAM memory required to support a 64-bit mobile CPU, chip makers would be forced to revamp production lines...