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    Home / Products / Transceivers / NVIDIA InfiniBand Transceivers / 800G OSFP InfiniBand NDR / 202944

    NVIDIA/Mellanox MMS4X00-NM-FLT Compatible 800GBASE-DR8 (2xDR4) Twin-port OSFP RHS/Flat Top PAM4 1310nm 500m Dual MPO-12/APC DDM SMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Product No: 202944
    26 Reviews
    13 Sold
    US$ 799.00
    Compatible
    Transceivers type
    6 in real-time stock, 14 Jul, 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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    Add to Cart Bulk Order Quotes 
    1. 100% verified by the original
2. Flat top design for DGX- H100 Cedar-7 or liquid-cooled
3. Support the InfiniBand NDR and Ethernet protocols
4. 8x 100G-PAM4 electrical to Dual 4x 100G-PAM4 optical Parallel
5. Maximum power consumption ≤14.5W
    See more

    Specifications

    NVIDIA/Mellanox MMS4X00-NM-FLT Compatible 800G DR8 OSFP RHS/Flat Top PAM4 Twin-port InfiniBand NDR Optical Transceiver Module (1310nm, 500m, 2x MPO-12/APC Connectors, SMF, 0℃ to +70℃, DDM)

     

    NVIDIA/Mellanox MMS4X00-NM-FLT compatible 800G DR8 (2x400G DR4) OSFP is an Infiniband and Ethernet twin-port transceiver module with dual MPO-12 APC connectors at 400Gb/s each. It enables the fiber link of 500m at 2x400Gb/s over single-mode fiber (SMF). With the Pulse-amplitude Modulation (PAM4) modulation, the 2xDR4 OSFP adopts 8-channels of 100G-PAM4 electrical modulation and two ports of 4-channel 100G-PAM4 optical Parallel modulation.

     

    With a flat top design, the OSFP-RHS is offered for Liquid-cooled systems and DGX H100 Cedar7 systems links. Its main application is to link the DGX H100 “Viking” CPU chassis to Cedar-7 complex to switches together up to 100 meters. QSFPTEK NVIDIA InfiniBand compatible optics are 100% tested in NVIDIA InfiniBand host devices, ideal for InfiniBand NDR end-to-end systems.

     

    Part Number QT-OSFP-800G-2DR4-RHS Vendor Name QSFPTEK
    Form Factor Twin-port OSFP-RHS/Flat Top Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 1310nm Distance 500m
    Connector Dual MPO-12/APC Cable Type SMF
    Transmitter Type EML Receiver Type PIN PD
    TX Power -2.9 to 4 dBm Receiver Sensitivity < -5.9 dBm
    Packaging Technology COB (Chip on Board) Packaging Receiver Overload 4 dBm
    Power Consumption ≤14.5W Modulation Format 8x 100G-PAM4 electrical to Dual 4x 100G-PAM4 optical Parallel
    Extinction Ratio >3.5dB CDR (Clock and Data Recovery) TX & RX Built-in DSP
    Application Liquid-cooled systems and DGX H100 Cedar7 systems links MTBF 4016064 Hours
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols OSFP MSA, IEEE 802.3ck-2022, 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

    Twin-port 800G (2x400G) OSFP IB/ETH Switch to DGX H100 GPU Systems：

    Twin-port 800G (2x400G) OSFP IB/ETH Switch to DGX H100 GPU Systems

    Product details

    Undergoes Comprehensive Performance Testing to Guarantee Optimal Reliability

     

    The QSFPTEK test center conducts complete testing procedures with advanced professional test equipment, including BER test, eye diagram test, Optical Spectrum test, jitter test, etc. Each module has been stringently tested by world-class test devices from Keysight and Anritsu to guarantee flawless operation and optimal reliability.

     

    Performance test devices  

     

     

    Select a Proper Heat Dissipation Design for Your Needs

    Finned Top vs Flat Top

    Closed Finned Top 800G OSFP optics with Integrated Heat Sink (IHS) design are used for both Quantum-2 InfiniBand or Spectrum-4 Ethernet air-cooled and liquid-cooled systems. Flat top 800G OSFP optics with Riding Heat Sink (RHS) design are used in Liquid-cooled and DGX H100 Cedar7 Systems.

     

    Questions & Answers

    • ALL (15)
    • QT-OSFP-800G-2SR4 (2)
    • QT-OSFP-800G-2VR4 (4)
    • QT-OSFP-800G-2FR4 (2)
    • QT-OSFP-800G-2DR4 (1)
    • 800G InfiniBand NDR (4)

    Customer Reviews

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    • ALL (12)
    • Shopping Experience (4)
    • Stable (2)
    • Repurchase (1)
    • High Reliability (1)
    • Compatibility (1)
    • Fast Delivery (2)
    • Customer Services (3)
    • Jason Lewis United States of America
      2026-07-03

      Getting full 800G throughput with no errors. We're pushing pretty heavy AI training workloads and these things haven't broken a sweat. Honestly, finding compatible optics for these specialized systems can be a nightmare sometimes, but these worked straight out of the box. Saved a ton vs. going with the OEM parts too. Definitely grabbing more for our next expansion. 5 stars.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Baldwin United States of America
      2026-06-29

      We had a few technical questions before ordering, and the support team was knowledgeable and easy to work with. That made the whole process much smoother.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Aiguo Singapore
      2026-06-17

      Got this OSFP for our DGX H100 setup and it's been running like a champ. Plugged it in, no issues, link came right up. QSFPTEK has been solid across the board. I've bought a bunch of stuff from them and I'll definitely be back for more.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Owen3 United States of America
      2026-06-09

      Works great with our system. Plugged in and worked immediately, stable 800G link, no issues so far. Very satisfied.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Alex Barrett United States of America
      2026-05-19

      Works exactly as it should, no issues. QSFPTEK never lets me down. Will buy again.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Marjorie Augustine United States of America
      2026-05-09

      We ordered these modules for a new rack deployment and were pleased with the compatibility. The switches recognized them immediately, and there were no firmware-related issues during commissioning. Everything worked as expected.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Benton L. United States of America
      2026-05-07

      No drops, no overheating. For a third-party optic at this speed, that's seriously impressive. If you're running a greenfield 800G deployment and don't want to bleed cash on name-brand markup, these are a no-brainer.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Roderick United States of America
      2026-05-04

      We had a few pre-sale questions before placing the order, and the support team responded quickly with clear answers. That level of service gave us confidence to move forward.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Pual United States of America
      2026-04-28

      I’ve received the shipment, and the transceivers worked perfectly straight out of the box. Thanks for the excellent service and fast processing.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Nikola D. United States of America
      2026-04-02

      These liquid-cooled flat-top modules are handling the traffic perfectly. I’ve been using QSFPTEK for years and they’ve never let me down. Already planning my next order.

      Transceivers typeMMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

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      QT-OSFP-800G-2DR4-RHS 500M Datasheet.pdf
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    NVIDIA/Mellanox MMS4X00-NM-FLT Compatible 800GBASE-DR8 (2xDR4) Twin-port OSFP RHS/Flat Top PAM4 1310nm 500m Dual MPO-12/APC DDM SMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

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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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    NVIDIA/Mellanox MMS4X00-NM-FLT Compatible 800GBASE-DR8 (2xDR4) Twin-port OSFP RHS/Flat Top PAM4 1310nm 500m Dual MPO-12/APC DDM SMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems
    US$ 799.00
    Compatible
    NVIDIA (InfiniBand/Ethernet)
    Transceivers type
    MMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top
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    Bulk Order Quotes
    NVIDIA/Mellanox MMS4X00-NM-FLT Compatible 800GBASE-DR8 (2xDR4) Twin-port OSFP RHS/Flat Top PAM4 1310nm 500m Dual MPO-12/APC DDM SMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMS4X00-NM-FLT OSFP 2DR4 | 500m | Dual MPO-12/APC | RHS/Flat Top

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