Intel will stick longer with DDR2 because DDR3 prices haven't fallen as much as expected, while AMD is said to have stability and compatibility problems with the DDR3 memory controller of its AM3 processors.
Since DDR3 memory prices have not fallen as much as Intel expected, while demand for its Core i7 CPU and X58 chipsets also has not yet met expectations, Intel has decided to postpone its DDR3-only 5-series chipsets until September this year.
Meanwhile, AMD's is still struggling with technical difficulties to achieve stability and compatibly with the DDR3 controller built into its AM3-based CPUs, and so the company is also unlikely to transition to DDR3 until it is able to come out with a workable BIOS, added the sources.