Welcome to QSFPTEK Global     Free shipping on U.S. & EU orders over US$79.8     Global warehouse

Currency: USD
USD - US Dollar
EUR - Euro
JPY - Japanese Yen
KRW - Korean Won
English
Contact Us
Search

Cart

0
Free shipping on U.S. & EU orders over US$79.8
English
  • English

    • Chat Now

    [email protected]

    (858) 583 6532

    Currency: USD
    Choose language
    Back
    • USD - US Dollar
    • EUR - Euro
    • JPY - Japanese Yen
    • KRW - Korean Won
    Back

    -
    +

    Add to Cart

    Home / Products / Transceivers / NVIDIA InfiniBand Transceivers / 800G OSFP InfiniBand NDR / 202927

    NVIDIA/Mellanox MMA4Z00-NS-FLT Compatible 800GBASE-SR8 (2xSR4) Twin-port OSFP RHS/Flat Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Product No: 202927
    17 Reviews
    368 Sold
    US$ 599.00
    Compatible
    Transceivers type
    46 in real-time stock, 24 Jun, 2026

    Free Shipping over US$ 79.8

    Global warehouses in stock

    5-Year Warranty 1-Year Exchange
    Warranty
    Providing industry-leading limited lifetime warranty.
    Please check our warranty policy for details.
    Returns & Exchange
    Exchanges caused by the customer's reasons will not be accepted.
    Please ensure that the item you're returning is repackaged with all the cords, adapters, and documentation included when you receive it.
    Please check our Return Policy for details.
    -
    +
    Add to Cart Bulk Order Quotes 
    1. Built-in Broadcom 7nm DSP chip
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 ≤16W
    See more

    Specifications

    NVIDIA/Mellanox MMA4Z00-NS-FLT Compatible 800G SR8 OSFP RHS/Flat Top PAM4 Twin-port InfiniBand NDR Optical Transceiver Module (850nm, 50m, 2x MPO-12/APC Connectors, MMF, 0℃ to +70℃, DDM)

     

    NVIDIA/Mellanox MMA4Z00-NS-FLT compatible 800G SR8 (2x400G SR4) 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 50m at 2x400Gb/s over multi-mode fiber (MMF). With the Pulse-amplitude Modulation (PAM4) modulation, the 2xSR4 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 50 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-2VR4-RHS Vendor Name QSFPTEK
    Form Factor Twin-port OSFP-RHS/Flat Top Max Data Rate 850Gbps (8x 106.25Gbps)
    Wavelength 850nm Distance 50m
    Connector Dual 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 8x 100G-PAM4 electrical to Dual 4x 100G-PAM4 optical Parallel
    Extinction Ratio ＞2.5dB CDR (Clock and Data Recovery) TX and RX Built-in CDR
    Application Infiniband or Ethernet Liquid-Cooled and DGX H100 Cedar7 Systems MTBF 3676471 Hours
    DDM/DOM Supported Temperature 0 to 70°C (32 to 158°F)
    Protocols OSFP MSA, IEEE 802.3-2022, 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

    Open Finned Top vs Closed Finned Top vs Flat Top

    Open Finned Top 800G OSFP optics with Integrated Heat Sink (IHS) design are used only in Quantum-2 InfiniBand or Spectrum-4 Ethernet air-cooled switches. 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

    Write a Review
    Sign in to write a review
    Write a Review

    5 stars

    17 Reviews

    4 stars

    0 Reviews

    3 stars

    0 Reviews

    2 stars

    0 Reviews

    1 stars

    0 Reviews

    Reviews with images

    See all photos

    Read reviews that mention

    • ALL (17)
    • Good Price (6)
    • Shopping Experience (2)
    • Good Packaging (1)
    • Plug-and-Play (2)
    • Stable (2)
    • High Reliability (1)
    • Repurchase (4)
    • Fast Delivery (1)
    • Compatibility (5)
    • High Performance (2)
    • Anthony United States of America
      2026-06-06

      Cheap, fast shipping, worked out of the box. Will buy again.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Jay Vaughan United States of America
      2026-06-02

      These honestly saved a project for us. Another supplier kept pushing delivery dates back, and we were getting dangerously close to our deployment deadline. The modules arrived in four days, passed testing, and were in production by the end of the week. There's a certain relief when something arrives and does exactly what it's supposed to do. This was one of those purchases.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Kathy United States of America
      2026-05-31

      Really solid product, and the price is totally fair. The description was spot on, and it fit my project perfectly.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Otto William United States of America
      2026-05-28

      Ended up being a better experience than expected. The modules came quickly, installation was straightforward, and they locked into the ports without any issues. We’re running them in a dense GPU rack with heavy east-west traffic, and temperatures have stayed stable so far.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Nelly Clare United States of America
      2026-05-25

      Shipping was quicker than expected, packaging was clean, and the modules didn’t arrive with scratched housings like we’ve seen from some suppliers. Been running them for a while now in a GPU environment and haven’t had a reason to touch them again.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Anastasia Smith United States of America
      2026-05-22

      The heat dissipation is good; there were no speed reductions or abnormal temperature rise alarms under continuous load.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • José France
      2026-05-17

      Cela fait environ six semaines que j’utilise ce module 800G SR8 dans mon cluster H100 — zéro problème. Pas de souci de chaleur, pas de coupure de liaison. J’ai essayé d’autres marques de transceivers InfiniBand avant, mais QSFPTEK offre la même compatibilité NVIDIA à une fraction du prix. Je rachèterai sans hésiter quand nous agrandirons le cluster au prochain trimestre.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Varese C. United States of America
      2026-05-14

      Build's decent. So yeah, it's good value, for the price and reliability.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Francisco United Kingdom
      2026-05-11

      Running a DGX H100 cluster in our lab and needed liquid-cooled compatible optics for the Cedar7 rack. These MMA4Z00-NS-FLT flat tops dropped right into our OSFP cages, no compatibility issues whatsoever. Recognized instantly on our Quantum-2 InfiniBand fabric.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    • Desmond United States of America
      2026-05-08

      Very easy to install and the modules were recognized instantly. Link stability has been excellent during heavy workloads, and the overall build quality feels reliable for long-term use.

      Transceivers typeMMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

      CompatibleNVIDIA (InfiniBand/Ethernet)

      Verified Purchase

      Helpful

      0

    Video

    Resources

    • PDF Document
      QT-OSFP-800G-2VR4-RHS Datasheet.pdf
    Check Test Reports on Target Device
    Contact us
    Write a Review
    NVIDIA/Mellanox MMA4Z00-NS-FLT Compatible 800GBASE-SR8 (2xSR4) Twin-port OSFP RHS/Flat Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

    * Review
    0/1000
    Allow files type of JPG, PNG, MP4. Maximum file size: 5MB

    Maximum size: 5MB

    Satisfaction
    Customer Gallery
    View All Customer Gallery

    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

    Helpful

    8

    Sign in to vote
    Added to Cart
    NVIDIA/Mellanox MMA4Z00-NS-FLT Compatible 800GBASE-SR8 (2xSR4) Twin-port OSFP RHS/Flat Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems
    US$ 599.00
    Compatible
    NVIDIA (InfiniBand/Ethernet)
    Transceivers type
    MMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top
    Quantity
    Subtotal
    View Cart
    Check Out
    Continue shopping

    Confirmation

    Successfully added shopping cart

    Bulk Order Quotes
    NVIDIA/Mellanox MMA4Z00-NS-FLT Compatible 800GBASE-SR8 (2xSR4) Twin-port OSFP RHS/Flat Top PAM4 850nm 50m Dual MPO-12/APC DDM MMF InfiniBand NDR Optical Transceiver Module for Liquid-cooled and DGX H100 Cedar7 Systems

    Compatible NVIDIA (InfiniBand/Ethernet)

    Transceivers type MMA4Z00-NS-FLT OSFP 2SR4 | 50m | Dual MPO-12/APC | RHS/Flat Top

  • Qty:

  • Name:

  • E-mail:

  • Country