- FiberMall
- August 31, 2023
- 9:55 am

FiberMall
Answered on 9:55 am
There are two form factors defined for 400G optical modules and cables:
- The OSFP: The OSFP stands for “Octal Small Form-factor Pluggable”. It is described as an “Octal” module because the electrical interface of an OSFP connector consists of 8 electrical lanes, running at 50Gb/s each, for a total bandwidth of 400Gb/s.
- The QSFP-DD: The QSFP-DD stands for “Quad Small Form-factor Pluggable (QSFP) – Double Density (DD)”. The electrical interface of a QSFP-DD connector also has 8 electrical lanes, running at 50Gb/s each, for a total bandwidth of 400Gb/s. The QSFP-DD form factor is similar to the QSFP form factor, except a second row of electrical contacts has been added to increase the number of high-speed electrical lanes from 4 (in a QSFP) to 8 (in a QSFP-DD).
People Also Ask
Comprehensive Analysis of 400GB NDR Splitter Cable and OSFP 800G Copper Technologies
Introduction As AI computing power explodes and hyperscale data centers rapidly expand, global network bandwidth demand grows at over 30% annually. In this era of high-density port configurations and energy efficiency optimization, OSFP (Octal Small Form Factor Pluggable) technology has emerged as a critical enabler for 400G/800G interconnects, thanks to
Understanding Nvidia’s NvLink and NvSwitch Evolution: Topology and Rates
2014: Introduction of Pascal Architecture with Tesla P100 In 2014, Nvidia launched the Tesla P100 based on the Pascal architecture. This GPU featured the first-generation NVLink technology, enabling high-speed communication between 4 or 8 GPUs. The NVLink 1.0’s bidirectional interconnect bandwidth was five times that of PCIe 3.0×16. Here’s the
Memory Liquid Cooling Solution of High Power Server
Heat Dissipation Problem of High-power Servers The data center is like an “super factory” of information, processing massive amounts of data day and night. Walking into the data center, rows of tall cabinets come into view. The servers inside are running at high speed like tireless “workaholics”. But do you
The Critical Role of Ethernet in AI Networks
The rapid advancement of artificial intelligence (AI) technology is revolutionizing the cloud computing and IT industries. Since the launch of Chat GPT in November 2022, the AI field has experienced an investment boom, attracting significant attention. Major cloud service providers have introduced new products and services to meet the growing
Related Articles

800G SR8 and 400G SR4 Optical Transceiver Modules Compatibility and Interconnection Test Report
Version Change Log Writer V0 Sample Test Cassie Test Purpose Test Objects:800G OSFP SR8/400G OSFP SR4/400G Q112 SR4. By conducting corresponding tests, the test parameters meet the relevant industry standards, and the test modules can be normally used for Nvidia (Mellanox) MQM9790 switch, Nvidia (Mellanox) ConnectX-7 network card and Nvidia (Mellanox) BlueField-3, laying a foundation for

Comprehensive Analysis of 400GB NDR Splitter Cable and OSFP 800G Copper Technologies
Introduction As AI computing power explodes and hyperscale data centers rapidly expand, global network bandwidth demand grows at over 30% annually. In this era of high-density port configurations and energy efficiency optimization, OSFP (Octal Small Form Factor Pluggable) technology has emerged as a critical enabler for 400G/800G interconnects, thanks to

Understanding Nvidia’s NvLink and NvSwitch Evolution: Topology and Rates
2014: Introduction of Pascal Architecture with Tesla P100 In 2014, Nvidia launched the Tesla P100 based on the Pascal architecture. This GPU featured the first-generation NVLink technology, enabling high-speed communication between 4 or 8 GPUs. The NVLink 1.0’s bidirectional interconnect bandwidth was five times that of PCIe 3.0×16. Here’s the

Memory Liquid Cooling Solution of High Power Server
Heat Dissipation Problem of High-power Servers The data center is like an “super factory” of information, processing massive amounts of data day and night. Walking into the data center, rows of tall cabinets come into view. The servers inside are running at high speed like tireless “workaholics”. But do you

NVIDIA CEO Jensen Huang has Unveiled the World’s Smallest AI Supercomputer
At the recent CES conference, Jensen Huang, dressed in a new jacket, announced the official release of the RTX 5090. Here are the prices for the 50 series GPUs. RTX 5090: $1999 / RTX 5090 D: 16,499 RMB RTX 5080: $999 / 8,299 RMB RTX 5070 Ti: $749 RTX 5070:

NVIDIA GB300
Although Nvidia is facing multiple pressures near the end of the year, according to supply chain sources, Nvidia still plans to release its next-generation GB300 AI server platform at the GTC conference to be held from March 17 to 20, 2025. The platform has undergone a series of new upgrades,

The Critical Role of Ethernet in AI Networks
The rapid advancement of artificial intelligence (AI) technology is revolutionizing the cloud computing and IT industries. Since the launch of Chat GPT in November 2022, the AI field has experienced an investment boom, attracting significant attention. Major cloud service providers have introduced new products and services to meet the growing
Related posts:
- Is the CX7 NDR 200 QSFP112 Compatible with HDR/EDR Cables?
- If the Server’s Module is OSFP and the Switch’s is QSFP112, can it be Linked by Cables to Connect Data?
- Is UFM as Functional as Managed Switch and Unmanaged Switch?
- What is the Maximum Transmission Distance Supported by InfiniBand Cables Without Affecting the Transmission Bandwidth Latency?