ASRock Rack 4U16X-GNR2 NVIDIA HGX B300 8-GPU Server Review - ServeTheHome
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Home AI ASRock Rack 4U16X-GNR2 NVIDIA HGX B300 8-GPU Server Review
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ASRock Rack 4U16X GNR2 DLC Front 1 Large
The ASRock Rack 4U16X-GNR2 is a large NVIDIA HGX B300 system. With two Intel Xeon 6 "Granite Rapids" processors, eight NVIDIA Blackwell Ultra GPUs, onboard NVLink interconnect, and more, this is a high-end GPU server for AI training and inference. The 8-GPU topology is also a very well-understood configuration that works well for many workloads. ASRock Rack offers two versions of this server, both of which we saw, and both use liquid cooling. We will primarily show the traditional DLC version in this review.
ASRock Rack 4U16X GNR2 DLC With Patrick Large<br>Full disclosure: We saw this and took photos in Taipei, Taiwan, during a trip earlier this year, and then ASRock Rack set us up with remote access, so we have to say this is sponsored. We also saw a ZutaCore-cooled model that day, which provides two-phase cooling for those who do not want water in their loops.
ASRock Rack 4U16X-GNR2 External Hardware Overview
The server itself is a relatively compact 4U chassis. Some may think that 4U is a large system, but it is extremely dense compared to an air-cooled version.
ASRock Rack 4U16X GNR2 DLC Front 1 Large<br>Here is a quick shot of the liquid-cooling nozzles. Blue for the incoming cooler liquid and red for the exiting, warmed liquid.
ASRock Rack 4U16X GNR2 DLC Nozzles Large<br>There are 12x 2.5″ U.2 NVMe bays on the front of the system. Two are connected to the CPU, while ten are connected to the PCIe switch complex.
ASRock Rack 4U16X GNR2 DLC SSD Tray Large<br>Here is a quick look at the cabled backplane for the SSDs.
ASRock Rack 4U16X GNR2 DLC Front Storage Backplane Large<br>Below the storage is front I/O for the server. You can see four USB 3 Type-A ports on the front, along with a VGA port and even a power button.
ASRock Rack 4U16X GNR2 DLC Front USB And VGA Large<br>Then comes one of our favorite features. ASRock has its management port along with two low-speed 1GbE ports (Intel i350-based) on the front of the system. If a customer wants these in the rear of the chassis, there are internal Ethernet cables that connect to the front of the chassis to provide connectivity to the rear ports.
ASRock Rack 4U16X GNR2 DLC Management And Platform NICs Large<br>If you want a combination of these, for example, to have the management port in the front and 1GbE ports in the rear, you can insert or remove the cables. That is a simple solution that means one server version can handle many data center cabling needs without requiring a separate SKU.
ASRock Rack 4U16X GNR2 DLC Front Management NIC To Rear Swap Large<br>Next to those ports are the CPU liquid-cooling hose inlet and outlet. Below those ports, you can see eight OSFP 800Gbps cages. Even without adding a PCIe card, this system has over 6.4Tbps of network bandwidth on this front panel alone.
ASRock Rack 4U16X GNR2 DLC Front 800G NIC Ports Large<br>Moving to the rear, we can see where those internal network cables connect to as we see the two 1GbE ports on the left rear and the management port and more USB...