To: unclewest who wrote (23527 ) 6/24/1999 8:51:00 AM From: REH Respond to of 93625
Future DRAM Types This section explores several new DRAM memory types. RDRAM*. RDRAM is short for Rambus DRAM, a type of DRAM memory developed by Rambus, Inc. RDRAM transfers data at up to 600MB/s, which is 10 times faster than conventional DRAMs. The new technology will enable the DRAM's highest level of performance-1.5 gigabytes per second (GB/s) of sustained bandwidth from a single device. In addition, the technology will span multiple generations of DRAM devices-from 32-megabit to 1-gigabit densities. The following chart shows when RDRAM might be used in the different market segments. Because new technology is usually expensive and scarce, high end desktops are usually the first market segment to implement a new capability. The proliferation of the new technology into the different market segments improves as the technology becomes less expensive and more readily available. RDRAM is already being used in place of Video Ram (VRAM) in some graphics accelerator boards, but it is not expected to be used for the main memory of PCs until 1998 or 1999. It requires modified motherboards, but eliminates the need for memory caches. Rambus licenses its memory designs to other semiconductor companies, which manufacture the chips. In 1997, Intel announced that it would license the Rambus technology for use on its future motherboards, thus making it the likely de facto standard for memory architectures. NDRAM. Intel and Rambus are expected to come up with a faster version of Rambus to be named NDRAM (Next generation DRAM), that will support data transfer speeds at up to 1,600MHz. Additional Reading For additional information about NDRAM, visit rambus.com .