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This is the NVIDIA MGX 44RU Manifold for Liquid Cooling
By Cliff Robinson -May 11, 2025
NVIDIA MGX 44RU Manifold
Folks looking at the NVIDIA GB200 NVL72 and GB300 NVL72 racks might have seen that the power and liquid cooling have been standardized between various components. NVIDIA took an OCP ORv3 Rack and enhanced it for its NVL72 designs. At NVIDIA GTC 2025, we saw a number of liquid cooling manifolds out of the MGX racks. This was neat to see both the standardization of the components and the variations between eight different vendors.
This is the NVIDIA MGX 44RU Manifold for Liquid Cooling
As a quick bit of context, here is the ASUS AI POD for the NVIDIA GB200 NVL72 (we also covered the GB300 NVL72 version at GTC 2025.) As you can see, the eighteen compute trays and nine NVLink Switch trays are at the heart of the system. These are all liquid cooled.
ASUS NVIDIA GB200 NVL72 At SC24 3
The manifolds in the rear of the rack has hot and cold sides. The connections to the components are designed to be blind-mating. To install a node, you just slot it in the correct rack space, and then slide it in. Power rails are connected to the rack’s busbar, NVLink connectors mate, and even the liquid cooling tubing from the nodes to the rack manifolds.
ASUS NVIDIA GB200 NVL72 At SC24 8
We noted that the manifolds in the ASUS designs we saw were Cooler Master. At GTC 2025, we saw eight different vendors making the rack manifolds. Here they are from Pinda, LiteOn, Lead Wealth, Foxconn, Delta, Cooler Master, AVC, and Auras.
NVIDIA MGX 44RU Manifold
While the size, nozzles, positioning, hose lengths, and more are very standardized due to the NVIDIA MGX design, companies are able to differentiate on some of the materials used and their manufacturing capabilities.
Final Words
The NVIDIA MGX realm is very standardized. This is one of the more varied parts of liquid cooling for the NVIDIA MGX systems. Looking at the liquid cooling blocks, for example, it is much more difficult to see differences. Still, it is neat to see these components not just out of the racks but also on display side-by-side.
ASUS AI Pod NVIDIA GB300 NVL72 at NVIDIA GTC 2025
By Patrick Kennedy -April 7, 20250
ASUS AI POD NVIDIA Grace Blackwell Close
At NVIDIA GTC 2025, we saw the ASUS AI Pod for the NVIDIA GB300 generation. We also saw many PCIe GPU systems as well as the new NVIDIA HGX B300 8 GPU system. For this one, we captured a bit of extra video and have a short:
That is a quick under 1 minute video and shows a few more views of the rack.
ASUS Booth at NVIDIA GTC 2025
The big focus of the ASUS AI Pod is dense AI compute.
ASUS AI POD NVIDIA GB300 NVL72 Front
Inside the NVIDIA GB300 NVL72 rack there are 18 NVIDIA GB300 compute blades.
ASUS AI POD NVIDIA GB300 Node
ASUS AI POD NVIDIA GB300 Node
Each blade has four B300 modules and two Grace CPUs.
ASUS AI POD NVIDIA Grace Blackwell Close
There is also the NVIDIA ConnectX-8 NIC supporting up to 1.6Tbps of networking near the Grace CPUs for scale-out networking beyond the rack.
ASUS AI Pod NVIDIA GB300 Node Rear To Mid Liquid Cooling
There is also a NVIDIA BlueField-3 DPU that would be liquid cooled as well as the power distribution board.
ASUS AI Pod NVIDIA GB300 Node Mid To Front Liquid Cooling
A neat feature was the the liquid cooled SSD array.
ASUS AI POD NVIDIA GB300 Liquid Cooled SSDs
Between these compute nodes, there are 9 NVLink Switch sleds. The entire rack is connected through the NVLink cartridges at the rear. Those four cable cartridges have over 1000 wires each making them a complex and important part of the racks.
ASUS AI POD NVIDIA GB300 NVL72 Rear
Here we can also see the bus bar power and the liquid cooling manifolds.
ASUS AI POD NVIDIA GB300 Node Power Distribution Board
One fun item is that there was a lot of Cooler Master cooling. Many of our readers have used Cooler Master coolers on ASUS motherboards for years, so it was neat to see the collaboration at the high-end for AI systems.
There was quite a bit more in the booth as well.
关于汉深
北京汉深流体技术有限公司 是丹佛斯中国数据中心签约代理商。产品包括FD83全流量双联锁液冷快换接头（互锁球阀）；液冷通用快速接头UQD & UQDB；OCP ORV3盲插快换接头BMQC；EHW194 EPDM液冷软管、电磁阀、压力和温度传感器。在人工智能AI、国家数字经济、东数西算、双碳、新基建战略的交汇点，公司聚焦组建高素质、经验丰富的液冷工程师团队，为客户提供卓越的工程设计和强大的客户服务,支持全球范围内的大批量交付。
公司产品涵盖：丹佛斯液冷流体连接器、EPDM软管、电磁阀、压力和温度传感器及Manifold。
未来公司发展规划：数据中心液冷基础设施解决方案厂家，具备冷量分配单元（CDU）、二次侧管路（SFN）和Manifold的专业研发设计制造能力。
- 针对机架式服务器中Manifold/节点、CDU/主回路等应用场景，提供不同口径及锁紧方式的手动和全自动快速连接器。
- 针对高可用和高密度要求的刀片式机架，可提供带浮动、自动校正不对中误差的盲插连接器。以实现狭小空间的精准对接。
- 基于OCP标准全新打造的液冷通用快速接头UQD & UQDB ;OCP ORV3盲插快换接头BMQC , 支持全球范围内的大批量交付。
- 新型体积更小的NVQD液冷快换接头。NVQD02 (H20); NVQD03 (Blackwell B300 GB300); NVQD04 。
- 液冷服务器、液冷板、CDU、液冷接头、管路、Manifold、液冷泵\阀门、换热器、冷却塔、漏液检测、液冷模块、过滤器、激光焊接、清洁度检测等。
About Us
Beijing Hansen Fluid Technology Co., Ltd. is an authorized distributor of Danfoss China, specializing in the data center industry. Our product portfolio includes Danfoss FD83 full-flow double-interlock liquid cooling quick-disconnect couplings (equipped with interlocking ball valves); universal liquid cooling quick-disconnect couplings UQD & UQDB; OCP ORV3 blind-mate quick-disconnect couplings BMQC; EHW194 EPDM liquid cooling hoses; solenoid valves; and pressure/temperature sensors. Amid the convergence of strategic trends such as artificial intelligence (AI), China's national digital economy, the “Eastern Data and Western Computing” initiative, the “dual carbon” goals, and new infrastructure development, we are committed to building a high-caliber, experienced team of liquid cooling engineers. We deliver exceptional engineering design, robust customer service, and support global large-scale deployment.
Products: Danfoss liquid cooling fluid connectors, EPDM hoses, solenoid valves, pressure/temperature sensors, and manifolds.
Development Plan:Our goal is to become a leading provider of liquid cooling infrastructure solutions for data centers, with professional R&D, design, and manufacturing capabilities for cooling distribution units (CDUs), secondary fluid networks (SFNs), and manifolds.
- We offer manual and fully automatic quick-disconnect couplings in various calibers and locking mechanisms, suitable for scenarios such as Manifold/Node and CDU/Main Circuit in rack-mounted servers.
- For blade racks requiring high availability and density, we provide blind-mate connectors with floating functionality and automatic misalignment correction—enabling precise docking in confined spaces.
- Our newly developed universal liquid cooling quick-disconnect couplings UQD & UQDB (based on OCP standards) and OCP ORV3 blind-mate quick-disconnect couplings BMQC support global large-scale deployment.
- The new NVQD series of liquid cooling quick-disconnect couplings features a more compact design, including models NVQD02 (H20), NVQD03 (Blackwell B300, GB300), and NVQD04
- Our business range includes liquid-cooling servers, liquid cooling plates, CDU (Cooling Distribution Units), liquid cooling connectors, piping, manifold, liquid cooling pumps and valves, heat exchangers, cooling towers, leak detection systems, liquid cooling modules, filters, laser welding, cleanliness testing, and more.
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