According to Digitimes, the 3000+ Athlon 64 is AMD's sweet spot while the dual core model is aimed at the lower cost end of the marketplace.
The Digitimes article at this URL claims that better than expected demand has caused the shortages.
But European motherboard firms, talking to the INQ on conditions of anonymity, were rather more blunt about the problem. One described the shortages as due to "bad planning". µ
The rise of robotics will result in a global loss of five million jobs by 2020, is yours one of them?
HP blames Oracle for causing sales of Itanium chip-based systems to sink
Don't poke Kim Jong-un
You have to wonder why they would bother hiding it