Shenzhen, China, September 10, 2025 – Credo Technology Group Holding Ltd (Nasdaq: CRDO), an innovative company providing secure, reliable, and high-speed connectivity solutions, today officially announced its high-performance, low-power Bluebird Digital Signal Processor (DSP) for 1.6 Tbps optical modules. This groundbreaking technology achieves energy-efficient single-channel 224 Gbps PAM4 data transmission, providing critical support for unlocking the immense computational power of the industry's most advanced GPU chips.

Next-generation AI networks impose even more stringent and extreme requirements on network bandwidth, latency, reliability, and energy efficiency. Many existing 1.6T optical modules suffer from excessive power consumption, posing challenges in cooling and power supply during deployment and limiting the widespread adoption of 1.6T technology. To address these challenges, the Credo Bluebird DSP utilizes advanced CMOS processes combined with Credo's patented technologies to achieve industry-leading energy efficiency, with the overall power consumption of the 1.6T optical module well below 20 W.

Chris Collins, Vice President of Optical Product Sales and Marketing at Credo, stated, 'The Bluebird 1.6T Optical DSP is meticulously designed to offer greater flexibility beyond existing solutions, supporting a wider range of applications. This milestone breakthrough once again underscores our commitment to driving innovation in the optical communications industry—providing our optical module partners with unparalleled performance and energy efficiency while continuously creating long-term value.'

Bluebird supports two configurations: 4-channel or 8-channel 224 Gbps PAM4, enabling both high-density 800G transmission and larger-capacity 1.6 T optical modules. Additionally, Bluebird is available in both full-featured DSP and Linear Receive Optical (LRO) versions, comprehensively covering the needs of diverse network architectures, including scale-up and scale-out.

To break through GPU-to-GPU communication bottlenecks, Bluebird's design architecture has been meticulously optimized to control both round-trip and one-way latencies within 40 ns. This ultra-low latency significantly enhances computational efficiency and performance in training and inference processes for Large Language Models (LLMs). Bluebird also features a complete set of telemetry capabilities, supporting real-time link monitoring and diagnostics to maximize system uptime and reliability; these functions can also be used for fault isolation, debugging, and volume production testing.

To facilitate optical module system integration, optical component selection, and host ASIC interoperability testing, Bluebird DSP's electrical and optical interfaces are equipped with a fully customized suite of performance optimization features that can be flexibly enabled or disabled based on the actual environment. For example, performance optimization features can be enabled in harsh environments to enhance link margin; in high-density clusters, these features can be disabled to reduce power consumption. Optional IEEE-compliant internal/external Forward Error Correction (FEC) functions are available to support optical fiber transmission over distances of 500 m, 2 km, and beyond, enabling customers to flexibly adapt to different application scenarios with a single design.

About CREDO

Credo's mission is to advance the development of high-speed connectivity solutions, providing next-generation AI-driven applications, cloud computing, and hyperscale networks with solutions that offer exceptional performance, high reliability, energy efficiency, and security. Credo's solutions are precisely optimized for optical/electrical application scenarios, supporting port speeds up to 1.6Tb/s. Credo's core technology is its proprietary SerDes IP. The company boasts a diverse product portfolio, including system-level products such as Active Electrical Cables (AEC), multiple chip product series (including Retimers, Optical DSPs, SerDes Chiplets), and SerDes IP licensing.