Elpida Unveiled Fastest DRAM @ 4.8GHz

Elpida Memory, Inc. (Elpida) (Tokyo Stock Exchange Code 6665), Japan'sleading global supplier of Dynamic Random Access Memory (DRAM) and Rambus Inc. (Nasdaq:RMBS), one of the world's premier technology licensing companies specializing inhigh-speed chip architectures, today introduced the industry's fastest DRAM, the512 Megabit (Mb), 4.8GHz XDR™ DRAM, based on Rambus' XDR memory architecture.This latest addition to the XDR DRAM family provides an industry-leading datatransfer rate of 9.6 Gigabytes per second (GB/s) with a single device, making itan ideal choice for high-performance, high-volume applications such ashigh-definition televisions (HDTV), gaming consoles, PCs, servers andworkstations.

"The industry's demand for memory bandwidth in next-generation products isgrowing rapidly as high-definition image data becomes more popular," saidYoshitaka Kinoshita, officer for the Digital Consumer Division of Elpida Memory,Inc. "Working with Rambus on XDR DRAM, we can provide the most cost-effective,high-bandwidth memory solution to our customers."

Elpida's 512Mb, 4.8GHz XDR DRAM (Part number: EDX5116ADSE-5E-E) device isorganized in 8-banks (x16/x8/x4 programmable), and with a 9.6GB/s data transferrate delivers six times the peak bandwidth of industry-standard DDR2-800 memorydevices. The 4.8GHz XDR device is manufactured using Elpida's 70 nm processtechnology and is available in a 104-ball FBGA package. To support bothhigh-speed and robust data transfer, XDR DRAM utilizes key enabling technologiesbuilt on patented Rambus innovations such as Differential Rambus Signaling Level(DRSL), which minimizes signal swing and noise; Octal Data Rate (ODR) technologywhich transfers eight bits of data on each clock cycle to achieve 4.8GHzoperation with just a 600MHz clock; and FlexPhase™ circuit technology forprecise on-chip data alignment with the clock. The 512Mb XDR DRAM device alsofeatures adaptive impedance matching, dynamic request scheduling and zerooverhead refresh.

"Elpida's 4.8GHz XDR DRAM is an excellent fit for consumer electronicsapplications requiring high bandwidth for 3-D graphics, high-definition imageprocessing, and advanced multimedia," said Sharon Holt, senior vice president ofworldwide sales, licensing and marketing at Rambus. "Elpida is well establishedas a leading XDR DRAM supplier and we are proud to work with them to advance theroadmap for XDR to 4.8GHz, achieving the world's fastest DRAM."

XDR DRAM is an integral part of the XDR memory architecture, working seamlesslywith the XDR Memory Controller (XMC), XDR IO controller interface cell (XIO),and the XDR Clock Generator (XCG) to enable unprecedented levels of memoryperformance while utilizing the fewest number of ICs. A single XDR DRAM deviceoperating in x16 mode achieves a data transfer rate of 9.6GB/s. In comparison,it requires six DDR2-800 x16 devices to achieve an equivalent data rate.

Proven in high-volume applications, Rambus XDR memory solutions are backed bycomprehensive engineering support services that range from chip design to systemintegration. XDR DRAM continues to provide an order of magnitude higherperformance than today's standard memories. For more information on the XDRmemory architecture, as well as the next-generation XDR2 DRAM withmicro-threading, please visit www.rambus.com/xdr.

Availability
Elpida's 512Mb 4.8GHz XDR DRAM devices (Part number: EDX5116ADSE-5E-E) will beavailable for sampling in December 2007. Volume production is expected to beginin April 2008. A datasheet is available upon request.