Optical Transceiver|800G OSFP 2xSR4|SR8 Finned Top PAM4 850nm 50m DOM Dual MPO-12APC MMF NVIDIA Compatible

The 800G OSFP 2xSR4 (SR8) Finned Top is a high-density pluggable optical transceiver engineered for the next generation of AI and High-Performance Computing (HPC) fabrics. Optimized for NVIDIA Quantum-2 InfiniBand and high-radix Ethernet switches, this module delivers 800Gbps aggregate bandwidthusing 8 lanes of 112G PAM4 signaling. Featuring a Twin-port OSFP Finned Top form factor for advanced thermal management in air-cooled environments, it supports link distances up to 100m over OM4 multimode fiber via Dual MPO-12/APC interfaces. Compliant with IEEE 802.3ck and OSFP MSA standards, it integrates real-time DDM diagnostics to ensure peak reliability in mission-critical GPU clusters.

Next Gen High Speed Networks with 800G Optical Transceiver

Below solution is based on an 800Gbps speed, paired with OSFP SR8 800G fiber transceiver, and connected via MTP|MPO cable. It is compatible with devices such as NVIDIA Spectrum-4 switches, easily achieving high speed data interoperability at the 800G level.

 

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Meanwhile, OSFP SR8 800G fiber optic transceiver can be used for flexible interoperability between 800G and 400G Ethernet. As shown in the picture below, using the OSFP SR8 800G fiber optic transceiver and connecting two 400G optical transceiver via MTP|MPO fiber cable, data transmission from 400G to 800G can be achieved. This is a highly adaptable high speed connection solution for network upgrades and application such as data centers.

Beyond simple speed upgrades, 800G technology is a catalyst for future network innovations, enabling the massive I/O throughput required by emerging Large Language Models (LLM).

 

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Finned Top 800G Transceiver Used in Ethernet Air-cooled Switches

Finned Top 800G transceiver tailored for Ethernet air-cooled switches, features integrated finned heat sinks for efficient passive cooling (reducing junction temperature by 5-10°C vs flat-top modules). Fully tested for mainstream switches (e.g., NVIDIA Spectrum series) with plug and play compatibility, 800G transceiver supports 800G PAM4 transmission, suits data centers and AI clusters, reduces room energy consumption, and solves core heat dissipation/compatibility pain points for efficient, stable high speed networks.

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100% Tested by NVIDIA Host Devices Environment

Op2Link’s OSFP SR8 800G optical transceivers undergo rigorous testing on original NVIDIA devices to ensure perfect product performance and reliability. Tests cover both hardware compatibility, including plugging, unplugging and rebooting procedures, and software compatibility, encompassing connectivity stability and parameter configuration accuracy. Every unit is quality tested for 100% compatibility in the targeted switch environment, which guarantees flawless operations.

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Application and Solutions Powering Next-Gen AI Factories

The 800G OSFP 2xSR4 is the fundamental building block for Generative AI Training, GPU-to-GPU Clustering, and InfiniBand Networking. It is engineered to handle the intense East-West traffic demands of modern hyperscale data centers.

1. InfiniBand Quantum-2 Interconnects Purpose-built for low-latency, zero-packet-loss connectivity in InfiniBand fabrics.

2. GPU Node Expansion Seamlessly connects H100/H200 GPU nodes to the leaf switch layer at 800Gbps. As GPU clusters expand, selecting specialized 800G AI infrastructure connectivity solutions has become critical for maintaining zero-packet-loss fabrics in modern high-performance computing environments.

3. HPC Spine-Leaf Architectures Provides the density and thermal reliability required for massive compute clusters.

The shift toward Terabit networking highlights the role of 800G high-speed communication as the backbone for low-latency data exchange in next-generation cloud architectures.

Explore our AI Compute & GPU Clustering Solutions to learn how UnitekFiber optimizes 800G network efficiency and thermal performance.

Solving Your High-Speed Infrastructure Challenges

Deploying 800G requires a deep understanding of PAM4 signal integrity and thermal budgets. UnitekFiber offers comprehensive interoperability testing and custom coding for Arista, Cisco, and NVIDIA-Mellanox hardware. We help you design a connectivity blueprint that eliminates downtime and maximizes throughput.

Planning an 800G AI cluster deployment? Our engineering team can provide validated cabling and transceiver combinations tailored to your rack density.

To optimize your CapEx and OpEx, our engineering team provides a technical guide on choosing the right 800G optics based on reach, power budget, and cooling requirements.

 

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