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    Home / Products / Transceivers / 400G/800G Ethernet Transceivers / 800G OSFP / 103581

    Arista Networks OSFP-800G-2VSR4 Compatible 800GBASE-SR8 (2x400G SR4) Twin-port OSFP IHS/Closed Finned Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Product No: 103581
    34 Reviews
    348 Sold
    US$ 599.00
    Compatible
    Transceivers type
    52 in real-time stock, 07 Jun, 2026

    Free Shipping over US$ 79.8

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    5-Year Warranty 1-Year Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
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    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
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    1. Built-in Broadcom DSP chip
2. Support 1x 800G/2x 400G/4x 200G/8x 100G Ethernet and InfiniBand NDR
3. VCSEL transmitter + PIN PD receiver, Class 1 Laser
4. Hot-pluggable OSFP with dual MPO-12/APC connectors
5. Support 850Gb/s aggregate bit rate, Power consumption < 16W
6. Two wire serial Interface with digital diagnostic monitoring (DDM)
7. Compliant with InfiniBand Trade Association (IBTA) Specification 1.6 - InfiniBand NDR electrical and optical interface
8. Complies with EU Directive 2011/65/EU (RoHS compliant)
    See more

    Specifications

    Arista Networks OSFP-800G-2VSR4 Compatible 800GBASE-SR8 (2x400G SR4) OSFP Finned Top PAM4 Optical Transceiver Module (850nm, 50m, 2x MPO-12/APC Connectors, MMF, 0℃ to +70℃, DDM)

     

    Arista Networks OSFP-800G-2VSR4 Compatible 800G OSFP SR8 (2x400G SR4) transceiver module supports a max data rate of 850Gbps. It enables the fiber link of 50m over multi-mode fiber (MMF) with dual MPO-12 APC connectors. QSFPTEK manufactured 800GBASE-SR8 (2x 400GBASE SR4) OSFP complies with IEEE 802.3-2022 8x100GBASE-VR1 optical interface, IEEE 802.3ck-2022 8x100GAUI-1 C2M electrical interface, OSFP MSA Specification Rev 5.0 Type 2, CMIS Rev 5.0.

     

    DDM (digital diagnostics monitoring) function is supported on the 800G fiber optic transceiver to achieve real-time operating parameters monitoring. Adopting the Pulse-amplitude Modulation (PAM4) modulation, the SR8 OSFP achieves 800 Gigabit Ethernet through 8x 106.25 PAM4. The 800G SR8 OSFP is widely used for 800 gigabit Ethernet, 800G to 2x 400GBASE-SR4 breakout, data center and InfiniBand NDR applications.

     

    Part Number QT-OSFP-800G-2VR4 Vendor Name QSFPTEK
    Form Factor Twin-port OSFP Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 850nm Distance 50m
    Connector Dual MTP/MPO-12/APC Cable Type MMF
    Transmitter Type VCSEL Receiver Type PIN PD
    TX Power -4.6 to 4 dBm Receiver Sensitivity < -6.3 dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 4 dBm
    Power Consumption < 16W Modulation Format PAM4
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols IEEE 802.3-2022, IEEE 802.3ck-2022, OSFP MSA, CMIS Rev 5.0 Warranty 5 Years
    Quality Testing Program
    Optical Transceivers Testing

    Take a look at our test program to get the reliable and high-performance optical transceivers.

    Quality Certifications

    Applications

    Scenario 1: 800G to 800G Direct Connectivity

    Scenario 1: 800G to 800G Direct Connectivity

     

     

    Scenario 2: 800G to 2x 400GE Breakout Connectivity

    Scenario 2: 800G to 2x 400GE Breakout Connectivity

     

     

    Scenario 3: 800G to 200GE Breakout Connectivity

    Scenario 3: 800G to 200GE Breakout Connectivity

    Product details

    Broadcom DSP & Broadcom VCSEL Unlock High-Efficiency AI Data Center Interconnect

    This 800GBASE-SR8 (2x400G SR4) OSFP module utilizes Broadcom's high-performance DSP chipset and Broadcom's VCSEL lasers to natively optimize signal integrity, significantly reduce power consumption and latency, and meet the high stability requirements of demanding environments. It provides an extremely energy-efficient and reliable 800G/400G interconnect solution for AI clusters and data centers.

    Broadcom DSP

    Broadcom VCSEL

    Excellent Performance

    Top-tier PAM-4 DSP for Ultra-Low BER


    High Energy Efficiency

    Industry's Lowest Power Consumption, Supporting Sustained High-Speed operation


    Advanced Equalization

    Powerful Impairment Compensation, Supporting High-Density Deployment


    High Integration

    Built-in Voltage Regulation and FEC Ensure Link Reliability

    Stable Output

    Highly Stable Signal Across the Full Temperature Range


    Efficient and Energy-Saving

    High-Speed transmission with Low Power Consumption and Low Temperature Rise


    Long-Term Reliability

    Validated in Harsh Environments to Ensure Long-Term Stability


    High-Density Design

    7nm Process and Compact Structure for Optimized Port Density

      

    Broadcom DSP & Broadcom VCSEL Unlock High-Efficiency AI Data Center Interconnect 

     

    Easy 800G to 2x 400G breakout with MMFs

    The 800G OSFP 2SR4 module is designed with dual MPO-12/APC connectors, while each connector can connect to a physically separate 400G SR4 OSFP/QSFP-DD/QSFP112 module via an MTP/MPO-12 APC OM4 MMF. This enables 800G to 2x 400G breakout links without the need for using breakout fiber optic cables.

     

    Easy 800G to 2x 400G Breakout with OS2 SMFs

     

     

    Finned-top Design to Ensure Long-term Stability

    Finned-top modules feature a heat sink on the top of transceiver or its laser. With superior thermal management, they are ideal for switches requiring efficient heat dissipation in long-term stable operation, such as Quantum-2 InfiniBand switch and the Spectrum-4 Ethernet switch.

    Flat-top optics are used for adapters and Data Processing Units (DPUs), including the ConnectX-7 InfiniBand adapter and BlueField-3 DPU. Flat-top design can maximum optical coupling and transmission efficiency.

     

    Finned-top Design to Ensure Long-term Stability

     

     

    8x 100Gbps PAM4 Modulation Technology

    Utilize 8x electrial lanes and 8x optical lanes modulated at 100G PAM-4 per lane. On the output side, it convert 8x 106.25Gb/s electrical signal to 8x 106.25Gb/s optical signals. On the receiver side, it convert 8x 100Gb/s optical signal to 8x 100Gb/s electrical signals.

     

    8x 100Gbps PAM4 Modulation Technology

     

     

    800G OSFP Optical Transceivers Contrast Table

     

    Part Number

    QT-OSFP-800G-2VR4

    QT-OSFP-800G-2SR4

    QT-OSFP-800G-2DR4

    QT-OSFP-800GSi-2DR4

    Image

    Data Rate

    800G

    800G

    800G

    800G

    Optical Connector

    Dual MPO-12/APC

    Dual MPO-12/APC

    Dual MPO-12/APC

    Dual MPO-12/APC

    Cable Type

    MMF

    MMF

    SMF

    SMF

    Wavelength

    850nm

    850nm

    1310nm

    1310nm

    Reach

    50m

    100m@OM4 MMF

    60m@OM3 MMF

    500m

    500m

    Modulation

    PAM4

    PAM4

    PAM4

    PAM4

    Max Power Consumption

    < 16W

    < 13.5W

    < 16.5W

    < 16W

    Matching Transceivers

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4

    QT-Q112-400G-SR4

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4

    QT-Q112-400G-SR4

    QT-QSFP-DD-DR4

    QT-QSFP28-DR1

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4

    QT-Q112-400G-SR4

    Application

    800G to 800G, 800G to 2x400G breakout, 800G to 4x200G breakout

    800G to 800G, 800G to 2x400G breakout, 800G to 4x200G breakout

    800G to 800G, 800G to 2x400G breakout, 800G to 8x100G breakout

    800G to 800G, 800G to 2x400G breakout, 800G to 4x200G breakout

    Part Number

    QT-OSFP-800G-2DR4-LPO

    QT-OSFP-800G-2XDR4

    QT-OSFP-800G-2FR4

    QT-OSFP-800G-2LR4

    Image

    Data Rate

    800G

    800G

    800G

    800G

    Optical Connector

    Dual MPO-12/APC

    Dual MPO-12/APC

    Dual Duplex LC/UPC

    Dual Duplex LC/UPC

    Cable Type

    SMF

    SMF

    SMF

    SMF

    Wavelength

    1310nm

    1310nm

    1271nm, 1291nm, 1311nm and 1331nm

    1271nm, 1291nm, 1311nm, and 1331nm

    Reach

    500m

    2km

    2km

    10km

    Modulation

    PAM4

    PAM4

    PAM4

    PAM4

    Max Power Consumption

    < 8W

    < 16.5W

    ≤ 16.5W

    < 15W

    Matching Transceivers

    QT-OSFP-400G-SR4

    QT-QSFP-DD-SR4

    QT-Q112-400G-SR4

    QT-QSFP-DD-DR4+

    QT-QSFP-DD-FR4

    QT-QSFP-DD-LR4

    Application

    800G to 800G, 800G to 2x400G breakout, 800G to 4x200G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    800G to 800G, 800G to 2x400G breakout

    Questions & Answers

    • ALL (11)
    • 400G OSFP (1)
    • QT-QSFP-DD-800G-DR8 (1)
    • QT-OSFP-800G-2FR4 (2)
    • QT-OSFP-800G-2DR4 (1)
    • QT-QSFP-DD-800G-2FR4 (3)

    Customer Reviews

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    5 stars

    34 Reviews

    4 stars

    0 Reviews

    3 stars

    0 Reviews

    2 stars

    0 Reviews

    1 stars

    0 Reviews

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    • ALL (14)
    • Premium Service (2)
    • High performance (3)
    • Good Product (2)
    • Shopping Experience (2)
    • Stable (3)
    • DDM (1)
    • High reliability (1)
    • Customer Support (2)
    • Good Packaging (1)
    • Compatibility (2)
    • Rosalind Margery United States of America
      2026-06-05

      Plugged this 800G Twin-port OSFP into our Arista switch and it was recognized instantly—no vendor lock warnings. Split it into 2x400G SR4 via MPO-12/APC to an InfiniBand environment. After a 24-hour traffic stress test, Pre-FEC BER remains stable with zero CRC errors or packet drops. The Closed Finned Top handles heat dissipation efficiently, stabilizing around 52°C under full PAM4 load. DDM optical power readings are perfectly accurate compared to our meters. Exceptional link budget and hardware quality for a fraction of the OEM cost. Highly recommended for high-density setups.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Mattew United States of America
      2026-06-04

      Communication throughout the order process was excellent. We received updates quickly and got answers whenever we needed them.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Yedda Faraday United States of America
      2026-06-01

      We use this 2VR4 module for short-range interconnects within a server rack. These modules offer good stability and quick link setup. The module itself is solidly built, and the plug-and-play experience is better than some cheaper options; it doesn't feel loose or flimsy. It does generate heat, but under normal airflow, there have been no alarms or performance throttling.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Heloise Congreve United States of America
      2026-05-29

      Outstanding 800G OSFP transceiver. The Closed Finned Top structure works perfectly with our chassis airflow, keeping temps steady at around 53°C under heavy PAM4 traffic. Connected to our MMF patch cords via dual MPO-12/APC, the optical alignment is precise with zero alignment errors. DDM diagnostic data is fully accessible on the Arista CLI, showing great Tx/Rx power margins.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Timothy United States of America
      2026-05-25

      Support was responsive when we had a quick deployment question. Shipping was also faster than expected.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Sid United States of America
      2026-05-21

      Used with the 7800R3 series switches, this product is affordably priced yet offers superior quality and stable transmission.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Quentin Gunter United States of America
      2026-05-19

      Before placing the order, I asked some detailed questions about the parameters, and the customer service responded professionally, without just providing template answers. Overall, I had no major complaints about the product after receiving it; it was a smooth purchasing experience.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Nathaniel United States of America
      2026-05-18

      The signal transmission is stable and the performance is strong, enabling it to complete transmission tasks very well. This is a module that combines high performance and cost-effectiveness.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Albert Longfellow United States of America
      2026-05-11

      Before starting install, we tested an 800G SR8 module (2x400G SR4) in a lab. I separated it into two 400G links without any problems. The signal looked clean and had low error rates.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

    • Jody United States of America
      2026-04-30

      The packaging was very professional, and the anti-static protection was excellent; there was no damage during transportation.

      Transceivers typeOSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

      CompatibleArista

      Verified Purchase

      Helpful

      0

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    Resources

    • PDF Document
      QT-OSFP-800G-2VR4 Datasheet.pdf
    • PDF Document
      Transceiver Module User Guid.pdf
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    Arista Networks OSFP-800G-2VSR4 Compatible 800GBASE-SR8 (2x400G SR4) Twin-port OSFP IHS/Closed Finned Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Compatible Arista

    Transceivers type OSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

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    Mark

    2023-12-15
    This product works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent value fo ct works well with my switch, and I plan to buy some DWDM transceivers from QT. Excellent valur money!

    Verified Purchase

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    Arista Networks OSFP-800G-2VSR4 Compatible 800GBASE-SR8 (2x400G SR4) Twin-port OSFP IHS/Closed Finned Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module for Ethernet and InfiniBand Applications
    US$ 599.00
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    Arista
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    OSFP-800G-2VSR4 | 50m | Dual MPO-12/APC
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    Bulk Order Quotes
    Arista Networks OSFP-800G-2VSR4 Compatible 800GBASE-SR8 (2x400G SR4) Twin-port OSFP IHS/Closed Finned Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF Optical Transceiver Module for Ethernet and InfiniBand Applications

    Compatible Arista

    Transceivers type OSFP-800G-2VSR4 | 50m | Dual MPO-12/APC

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