Rambus Unveils GDDR7 Memory Controller IP: PAM3 Signaling, Up To 48 Gbps Data Rates, 192 GB/s Bandwidth

23.04.2024 - 09:17 / wccftech.com / Hassan Mujtaba

Rambus has unveiled its next-gen GDDR7 memory controller IP, featuring PAM3 Signaling, and up to 48 Gbps transfer speeds.

Rambus Preps For Next-Gen Gaming & AI GPUs With GDDR7 Memory Controller IP: Delivering Substantial Improvements Over GDDR6

Press Release: As the latest addition to the Rambus portfolio of industry-leading interface and security digital IP for AI 2.0, the GDDR7 memory controller will provide the breakthrough memory throughput required by servers and clients in the next wave of AI inference.

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Supercharging AI Inference with GDDR7

The output of the AI 2.0 training process is an inference model that can be employed to create new multimodal content from a user’s prompts. Since accuracy and fidelity increase with model size, there is an ongoing push for larger and larger inference models. As AI inference becomes increasingly pervasive and moves out from the data center to the edge and endpoints, it drives the need for more powerful processing engines with tailored high-performance memory solutions across the entire computing landscape.

GPUs have been the inference engines of choice, and in the case of edge and endpoint applications, such as servers and desktops, these have been GPUs using GDDR6 memory. GDDR6, however, has reached the practical limit of standard NRZ signaling at 24 Gigabits per second (Gbps) data rates. To meet the bandwidth needs of future GPUs, a new generation of GDDR using a new signaling scheme is required. Enter GDDR7 memory which using PAM3 signaling can boost data rates to 40 Gbps and higher.

Rambus Silicon IP for AI 2.0

As the preferred silicon IP supplier for AI 2.0, Rambus offers industry-leading HBM, PCIe, and CXL Controller IP and is now the industry’s first GDDR7 Memory Controller IP. The Rambus GDDR7 Controller provides a full-featured, bandwidth-efficient solution for GDDR7 implementations. It supports 40 Gbps operation providing 160 Gigabytes per second (GB/s) throughput for a GDDR7 memory device, a 67% increase over the industry’s highest throughput GDDR6 Controller (also from Rambus).

The Rambus GDDR7 Controller enables a new generation of GDDR memory deployments for cutting-edge AI accelerators, graphics, and high-performance computing (HPC) applications.

Rambus GDDR7 Controller key features:

• Supports all GDDR7 link features including PAM3 and NRZ signaling
• Supports broad range of GDDR7 device sizes and speeds
• Optimized for high efficiency and low latency across a wide variety of traffic scenarios
• Flexible AXI interface support
• Low-power support (self-refresh, hibernate self-refresh, dynamic frequency scaling, etc.)
• Reliability, Availability and