Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. XDR2 DRAM is a type of Dynamic Random Access Memory that is offered by Rambus. It was announced on July 7, 2005 and the specification for which was released on March 26, 2008. Rambus has designed XDR2 as an evolution of, and the successor to, XDR DRAM. XDR2 DRAM is intended for use in high-end graphics cards and networking equipment. As a fabless semiconductor company, Rambus only produces a design; it must make deals with memory manufacturers to produce XDR2 DRAM chips, and there has been a notable lack of interest in doing so. In addition to a higher clock rate (up to 800 MHz), the XDR2 differential data lines transfer data at 16 times the system clock rate, transferring 16 bits per pin per clock cycle. This "Hex Data Rate" is twice XDR''s 8× multiplier. The basic burst size has also doubled.