The PCI Express® 6.0 (PCIe® 6.0) specification was released by PCI-SIG® in January 2022. This new generation of the ubiquitous PCIe standard brought with it many exciting new features designed to boost performance for compute-intensive workloads including data center, AI/ML and HPC applications. PCIe 6.0 has now evolved to version 6.1 of the standard. Find out all about PCIe 6.1 in the article below.
Data Center Evolution: The Leap to 64 GT/s Signaling with PCI Express 6.1
The PCI Express® (PCIe®) interface is the critical backbone that moves data at high bandwidth and low latency between various compute nodes such as CPUs, GPUs, FPGAs, and workload-specific accelerators. With the torrid rise in bandwidth demands of advanced workloads such as AI/ML training, PCIe 6.1 jumps signaling to 64 GT/s with some of the biggest changes yet in the standard.
PCIe 6.1 Controller Product Brief
The Rambus PCIe 6.1 Controller is configurable and scalable controller IP designed for ASIC implementation. Download the brief to learn about the features and the specs.
DDR5 vs DDR4 DRAM – All the Advantages & Design Challenges
Rambus Advances Data Center Server Performance with Industry-First Gen4 DDR5 RCD
Highlights:
- Boosts data rate to 7200 MT/s for a 50% memory bandwidth increase over today’s Gen1 DDR5 devices
- Extends leadership in key memory interface chip solutions for server main memory
- Supports accelerated roadmap of server performance for generative AI and other advanced data center workloads

Rambus Gen4 DDR5 RCD

The Rambus Gen4 DDR5 RCD boosts the data rate to 7200 MT/s.
SAN JOSE, Calif. – Dec. 27, 2023 – Rambus Inc. (NASDAQ: RMBS), a premier chip and silicon IP provider making data faster and safer, today announced the availability of its state-of-the-art Gen4 DDR5 Registering Clock Driver (RCD) which began sampling to the major DDR5 memory module (RDIMM) manufacturers in the fourth quarter of 2023. The Rambus Gen4 RCD boosts the data rate to 7200 MT/s, setting a new benchmark for performance and enabling a 50% increase in memory bandwidth over today’s 4800 MT/s DDR5 module solutions. It supports the rapid pace of server main memory performance improvements to meet the demands of generative AI and other advanced data center workloads.
“With memory being an essential enabler of server performance, the need for greater memory bandwidth continues its meteoric rise driven by demanding workloads like generative AI,” said Sean Fan, chief operating officer at Rambus. “The Rambus Gen4 DDR5 RCD is the latest demonstration of our commitment to providing leadership products ahead of the market need to support our customers’ current and planned server platforms.”
“Advanced workloads, led by the breathtaking pace of innovation in AI, are driving an accelerated roadmap of new server platforms for the data center,” said Shane Rau, VP, Computing Semiconductors at IDC. “DDR5 RCDs are critical to support the performance, power, and signal integrity required of RDIMMs in AI servers.”
Rambus DDR5 memory interface chips including the RCD, Serial Presence Detect (SPD) Hub and Temperature Sensors are important in achieving a new level of performance for leading-edge servers. With over 30 years of high-performance memory experience, Rambus is renowned for its signal integrity (SI) / power integrity (PI) expertise. This expertise helps enable DDR5 memory interface chips delivering superior performance and reliability for data center server RDIMMs.
Availability
The Rambus 7200 MT/s DDR5 RCD is available today.
More Information
Learn more about the Rambus DDR5 memory interface chips at https://www.rambus.com/ddr5.
DDR5 RCD 7200 MT/s Product Brief
The Rambus Registering Clock Driver (RCD) RCD4-GA0 enables DDR5 Registered DIMMs (RDIMMs) operating up to 7200 MT/s. Download the product brief to see the specifications and features.
