DDR-2 suffers from lack of demand, low yields
 

LOW YIELDS and low demand for DDR-2 means that market research firm iSuppli is predicting that the memory manufacturers will fail to reach their 2004 targets.

http://www.theinquirer.net/?article=17305


that's no surprise now? AMD still uses DDR, and only the latest and most expensive motherboards from Intel have DDR-II slots. At no performance gain and higher cost, it will be a while before DDR-II will become attractive for the masses