800G OSFP fiber transceiver is engineered for 800 Gigabit Ethernet connections, the flat top design 800G OSFP fiber transceiver is suitable for liquid-cooled swithches. 800G OSFP fiber transceiver integrates eight data lanes in each direction with 8×53.125GBd. Also, each lane can operate at 106.25 Gbps using PAM4 modulation, with distances of 70m via OM3 or 100m via OM4 fiber. 800G OSFP SR8 fiber transceiver features dual MTP/MPO-12 APC connectors and supports 850nm wavelength. 800G OSFP fiber transceiver can link to a single port 400G OSFP or QSFP112 transceiver. Compliant with OSFP MSA, IEEE 802.3db and IEEE 802.3ck standards.
The 800G OSFP SR8 (2xSR4) Flat Top is a pluggable optical module purpose-built for high-density AI and cloud computing environments utilizing NVIDIA-Mellanox networking hardware. Operating at 850nm with 8x112G PAM4 signaling, it delivers 800Gbps aggregate bandwidth over 100 meters of OM4 multimode fiber. Featuring a Flat Top form factor designed for switches with internal cooling or specialized liquid-cooled racks, it connects via Dual MPO-12/APC interfaces. Compliant with IEEE 802.3ck and OSFP MSA, this module provides the low-latency reliability required for 800G AI infrastructure connectivity in hyperscale GPU clusters.
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.
Built for 800Gbps cabling system, below solution combines an 800G OSFP SR8 fiber transceiver with MTP|MPO cable. 800G fiber transceiver works seamlessly with NVIDIA Spectrum-4 switches and similar equipment, delivering reliable 800G high speed data connectivity.
800G OSFP fiber optic transceiver features a flat top design, which is specifically optimized for liquid cooled environments, a key advantage for modern high density data centers and high power computing systems. Come with excellent thermal performance, 800G OSFP fiber transceiver ensures stable operation even in high temperature, closed liquid-cooled cabinets, perfectly matching the operating requirements of high end computing equipment. In addition, UnitekFiber also offer OSFP fiber transceiver module with finned tops to meet your fiber optic project required.
800G OSFP fiber transceiver is fully compatible with Mellanox/NVIDIA devices, enabling seamless interconnection and plug and play functionality with Mellanox/NVIDIA's high speed switches and servers, greatly reducing deployment costs and compatibility risks for users.
As a professional osfp pam4 wholesaler, UnitekFiber is committed to providing high quality optical transceivers that undergo stringent testing procedures. All of 800G transceivers will 100% tested before shpping. Through comprehensive and strict testing, the stability and consistency of the quality of the optical module can be ensured, thereby effectively improving the performance and reliability of the optical transceiver module.
The 800G OSFP SR8 Flat Top is a key component for Generative AI Training, GPU-to-GPU Clustering, and InfiniBand Networking. It provides the massive throughput required for high-frequency data exchange in the most demanding cloud environments.
NVIDIA-Mellanox Switch Interconnects Verified for seamless performance in InfiniBand Quantum-2 environments.
Liquid-Cooled Data Centers The flat surface is optimized for high-efficiency thermal contact in advanced cooling racks.
Spine-Leaf Breakout Supports 800G to 2x400G migration paths using existing MPO-12 cabling.
To better understand how these modules fit into your long-term scaling strategy, explore our technical guide on optical transceiver technology trends for AI and cloud infrastructures.
For engineers deploying Mellanox Quantum-2 or Spectrum-4 switches, the choice of OSFP top is not just aesthetic—it is functional. While most air-cooled switches require Finned Top, some specialized high-density or liquid-cooled environments demand the Flat Top. At UnitekFiber, we provide Mellanox-native EEPROM coding, ensuring 100% interoperability with NVIDIA's InfiniBand and Ethernet management tools.
Deploying 800G requires precision in both coding and physical heat dissipation. UnitekFiber provides validated solutions for complex multi-vendor environments. We help you navigate the nuances of choosing the right 800G optics to ensure your AI compute cluster operates with maximum uptime and minimum latency.
Consult our 800G team
Flat Top modules are used in switch cages that already have an integrated heat sink or in liquid-cooled systems. Finned Top modules have their own built-in heat sink and are used in switches where the module is exposed to direct airflow.
It simplifies the breakout process. You can use standard MPO-12 jumpers to split the 800G signal into two 400G links, which is a common requirement in future network innovations and high-density deployments.
It uses dual 12cores MPO/APC connectors, which are designed for high density, high speed optical connections in data center environments.
It is specifically designed for use with multimode fiber (MMF), as indicated by the 850nm wavelength and 50m transmission distance specification.
It primarily supports 800G Ethernet protocols, including those compliant with IEEE 802.3 standards for high speed Ethernet, making it suitable for data center interconnects and high-performance computing (HPC) networks.
Typically, it supports a commercial temperature range of 0°C to 70°C, which is standard for most data center environments.
Yes, as an OSFP form factor transceiver, it supports hot plugging, allowing for easy installation and replacement without powering down the network equipment, minimizing downtime.
We upgraded our data center's high speed links with UnitekFiber's 800G OSFP transceiver. The NVIDIA compatibility ensured seamless integration with our existing GPU accelerated systems, no compatibility hiccups at all.
The 100m transmission distance covers all our short-reach interconnect needs, and the finned top design keeps temperatures in check even under heavy load. Highly recommended for data centers needing reliable 800G connectivity.
The PAM4 modulation delivers stable 800Gbps throughput, and the DOM function lets us monitor key parameters in real time, super helpful for proactive maintenance. Installation was a breeze thanks to hot-plug support.
We chose this 800G transceiver for its balance of performance and value. Being NVIDIA compatible was a none negotiable for us, and it checks that box perfectly. The dual 12Cores MPO/APC connectors are high quality, and we haven’t had any issues with signal integrity so far.
In our high performance computing environment, speed and stability are critical. This 800G OSFP transceiver delivers on both. It integrates flawlessly with our NVIDIA networking gear, supporting the high bandwidth demands of our HPC workloads.
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