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| Category: Digital SOC IP Nominee: One of the most frustrating roadblocks today's engineers face is balancing the necessary trade-offs between memory performance for capacity and expandability. Rambus' DPP (Dynamic Point-to-Point) technology is designed to eradicate performance deficiencies inherent in previous approaches.
The DPP inventors anticipated the future direction of the market and implemented high-speed, differential signaling. DPP technology allows designers to maximize memory capacity without compromising the signal integrity benefits of point-to-point signaling. DPP technology allows PCs or home servers to utilize a single memory module at full bandwidth (left side of the diagram), but with an option for a second module upgrade on a fixed datapath (right side of the diagram). This enables an 8× increase in memory bandwidth compared with previous technologies for consumer, multimedia, and computing systems—all while supporting traditional modules and new application form factors. DPP brings serial-link data rates to standard low-cost systems. Once memory speeds surpass 1 GHz, routing data buses to multiple memory modules creates a bottleneck. DPP allows memory to operate at a much faster speed. The technology was first showcased in XDR memory, which began mass production this year. A single XDR memory-enabled XDIMM module provides 12.8 to 25.6 Gbytes/sec of peak memory bandwidth using just 32 data signal pairs, and supports between two and 18 DRAM devices. |
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