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16Gb/s and Beyond with Single-Ended I/O in High-Performance Graphics Memory
GDDR5 has emerged as a leading DRAM interface for applications requiring high system bandwidth like graphic cards, game consoles and high-performance compute systems. However, the requirements of newer applications drive even higher memory bandwidth. The paper discusses the development of GDDR6 as a lower-risk and more cost-effective solution as compared to other high-bandwidth memory solutions. We further introduce GDDR6 as offering a 2x increase in per-pin bandwidth over GDDR5, while maintaining compatibility with the established GDDR5 ecosystem. Circuit and channel performance scaling will be discussed and validated through measurement to demonstrate the potential for scaling GDDR6 to 16Gb/s.
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