What is DDR RAM Memory?
DDR memory, sometimes referred to as DDR SDRAM, stands for Double-Data-Rate Synchronous Dynamic Random Access Memory. DDR memory is based on the same architecture as the original SDRAM (single-data-rate) but it can transfer up to twice as much data in the same amount of time. DDR and the original SDRAM modules are not interchangeable since they have different pin configurations (DDR has one notch while SDRAM has two).
