Renesas Electronics Corporation, a leading supplier of advanced semiconductor solutions, has unveiled the industry’s first sixth-generation Registered Clock Driver (RCD) for DDR5 Registered Dual In-line Memory Modules (RDIMMs). The new RCD achieves a record-breaking data rate of 9600 Mega Transfers per Second (MT/s), the highest in the industry and a major leap beyond the 8800 MT/s performance of Renesas’ previous Gen5 RCD. This milestone establishes a new benchmark for memory interface performance in next-generation data center servers.
Key Features of Renesas’ Gen6 DDR5 RCD
- 10% Bandwidth Increase over Renesas’ Gen5 RCD (9600 MT/s versus 8800 MT/s)
- Backward Compatibility with Gen5 Platforms: Provides seamless upgrade path
- Enhanced Signal Integrity and Power Efficiency: Enables AI, HPC, and LLM workloads
- Expanded Decision Feedback Equalization Architecture: Offers eight taps and 1.5mV granularity for superior margin tuning
- Decision Engine Signal Telemetry and Margining (DESTM): Improved system-level diagnostics provides real-time signal quality indication, margin visibility, and diagnostic feedback for higher speeds
The new DDR5 RDIMMs are designed to meet the rapidly growing memory bandwidth demands driven by Artificial Intelligence (AI), High-Performance Computing (HPC), and other data-intensive data center applications. Renesas has played a pivotal role in the design, development, and deployment of these advanced RDIMMs, working closely with CPU and memory manufacturers as well as key data center partners to ensure seamless performance and compatibility. Building on its proven legacy in signal integrity and power optimization, Renesas continues to lead the market in DDR5 Registered Clock Drivers (RCDs), setting new standards for efficiency and reliability across the modern computing ecosystem.
“Explosive growth of generative AI is fueling higher SoC core count. This is driving unprecedented demand for memory bandwidth and capacity as a critical enabler of data center performance,” said Sameer Kuppahalli, Vice President of Memory Interface Division at Renesas. “Our sixth generation DDR5 Registered Clock Driver demonstrates Renesas’ continued commitment to memory interface innovation, path-finding and delivering solutions to stay ahead of market demand.”
“Samsung has collaborated with Renesas across multiple generations of memory interface components, including the successful qualification of Gen5 DDR5 RCD and PMIC5030,” said Indong Kim, VP of DRAM Product Planning, Samsung Electronics. “We are now excited to integrate Gen6 RCD into our DDR5 DIMMs, across multiple SoC platforms to support the growing demands of AI, HPC, and other memory-intensive workloads.”
Availability
The RRG5006x Gen6 RCD is designed to meet the stringent requirements of next-generation server platforms, offering robust performance, reliability, and scalability. Renesas is sampling the new RRG5006x RCD to select customers today, including all major DRAM suppliers. Production availability is expected in the first half of 2027.
Renesas at SC25
Renesas will showcase its memory interface solutions at the SC25 conference in St. Louis from November 16 through November 21 at booth #4101.
