ASUS ExpertCenter Pro ET900N G3: specs of the ASUS GB300 desktop with 748 GB and 1,600 W

ASUS ExpertCenter Pro ET900N G3, the ASUS GB300 desktop

The ASUS ExpertCenter Pro ET900N G3 is a deskside AI system that ASUS describes as "Built on NVIDIA DGX Station architecture". It carries one NVIDIA GB300 Grace Blackwell Ultra Desktop Superchip with a 72-core Grace CPU, a Blackwell Ultra GPU and 748 GB of coherent memory, of which 252 GB is HBM3e on the GPU. ASUS's documents add a 1,600 W power supply, closed-loop liquid cooling, two preinstalled 2 TB NVMe SSDs and a chassis of 232 × 584 × 565 mm (W × D × H) at 27 kg net.

This page rests on ASUS's product page, its tech-spec page and its datasheet (v4, undated), all read 12 November 2026. The pages give no SKU or part number, and the product page carries the line "Preliminary specifications, subject to change."

Like every maker's version of the DGX Station GB300, the ET900N G3 is supplied per project: before we can quote, the distribution asks us for the company, the project and the intended use. Our guide to buying a DGX Station GB300 in the EU describes the order.

What the ASUS DGX Station shares with every maker's version

The superchip is NVIDIA's and the same in the versions of all seven makers on NVIDIA's DGX Station page. ASUS repeats NVIDIA's figures: "Grace 72-Core Neoverse V2", "NVIDIA Blackwell Ultra" and "748GB of Coherent Memory", made up of 496 GB of LPDDR5X at 396 GB/s and 252 GB of HBM3e at 7.1 TB/s. The ConnectX-8 SuperNIC with two QSFP112 ports, the three PCIe slots and the operating system, "Ubuntu with NVIDIA AI Developer Tools", follow NVIDIA's table as well. Our articles on DGX Station GB300 specs and alternatives and on which open models run on the DGX Station GB300 work out what fits into the 252 GB.

ASUS also repeats two NVIDIA statements: "MIG partitions GPUs into up to seven isolated instances", and the system "supports linking up to two DGX Stations". Our article on the DGX Station GB300 for a team covers what these two statements mean when several people share one system.

NVIDIA publishes no power-supply rating, input voltage, cooling type, noise level, dimensions, weight or operating temperature for the DGX Station. Those figures come from each maker.

Five points where ASUS departs from NVIDIA's table

1. Drives. NVIDIA names no drives for its "4x M.2 Gen 5 Slots"; ASUS includes two 2 TB NVMe SSDs.
2. M.2 slots. ASUS's tech-spec page gives PCIe 6.0 x4 mode for two of the four slots.
3. Optional cards. NVIDIA lists four RTX PRO cards for the DGX Station, ASUS three.
4. Front ports. ASUS adds one USB 2.0 port to the two USB Type-C and two USB Type-A ports of NVIDIA's table.
5. Circuit note. NVIDIA's US and UK pages print "20A circuit required"; ASUS states the cord and the voltage by region.

Two 2 TB SSDs installed, two M.2 slots free

The tech-spec page lists four M.2 2280 slots under "Total: 4 (Optional)". Two of them support "PCIe 5.0 x4 mode, pre-configured for OS RAID 1", and a footnote adds: "Includes 2 x 2TB NVMe M.2 SSDs (pre-installed for OS)." The other two support "PCIe 6.0 x4 mode, for training data usage".

The product page and the datasheet summarise the storage differently: "Up to 4 x M.2 2280 NVMe PCIe 5.0 SSD, total 8TB". By our reading that is the maximum with four 2 TB drives, and the line names PCIe 5.0 for all four slots where the tech-spec page gives PCIe 6.0 for two. Gigabyte's page for its GB300 system names the source of each pair: the Gen5 slots hang on the CPU and the Gen6 slots on the ConnectX-8. If datasets are to sit in the two free slots, state the capacity in the enquiry.

One optional card in the first PCIe slot

ASUS lists three expansion slots. Location-1 is a PCIe x16 slot with a Gen 5.0 x16 link; Location-2 and Location-3 are x16 slots with Gen 5.0 x8 links. An M.2 Key E slot is listed besides, and Wi-Fi is optional.

The tech-spec page allows one optional NVIDIA graphics card, in the first PCIe slot, and names three models: NVIDIA RTX PRO 6000 Blackwell Max-Q Workstation Edition, NVIDIA RTX PRO 4000 Blackwell SFF and NVIDIA RTX PRO 2000 Blackwell. NVIDIA's own list for the DGX Station has a fourth card, the RTX PRO 6000 Workstation Edition with 600 W, and Gigabyte lists that card for its system. ASUS's list does not include it.

The Max-Q carries an asterisk on ASUS's page: "To ensure optimal stability, an ambient temperature of under 30°C is recommended during heavy workloads."

An added card shares the system's budget of 1,600 W with the superchip. By NVIDIA's development guide for the DGX Station (chapter "Dynamic Power Sloshing", read 12 November 2026), a card of up to 75 W leaves the power cap of the superchip module at 1,600 W, and a card of 76 to 300 W lowers it to 1,250 W. NVIDIA's datasheets give 70 W for the RTX PRO 2000 Blackwell and the RTX PRO 4000 Blackwell SFF Edition and 300 W for the Max-Q, so by our reading only the Max-Q lowers the cap.

The memory of the card stays separate from the 748 GB. NVIDIA's guide (coherency page, 22 July 2026) states: "RTX PRO device memory is not hardware-coherent with CPU memory." ASUS labels the mini DisplayPort at the back as a BMC port, so a monitor for graphics work needs the card.

We supply these three cards as well as the system; tell us which card belongs in the first slot, and it becomes a line of the same quote. For the smallest of them, a 16 GB card, see the RTX PRO 2000 Blackwell spec sheet and our page on buying the RTX PRO 2000 Blackwell.

Power supply, power cord and input voltage

ASUS specifies a "1600W TITANIUM ATX Power Supply" with the rating "115-240Vac, 15A-8A, 50-60Hz". The datasheet ties voltage and cord to the region: 125 V AC with a cord "IEC C19 to NEMA 5-20P" for North America, and 200 to 240 V AC with a cord from IEC C19 to the regional-standard plug elsewhere. A buyer in the EU therefore plans 200 to 240 V and a C19 cord with the plug of the country.

By the tech-spec page, the maximum power output depends on the regional input voltage and the cord. That page marks the cord "IEC C19 type (Optional)", while the datasheet lists a power cord among the accessories, so have the cord for your country written into the quote.

NVIDIA's US and UK product pages add "20A circuit required" to the 1,600 W, and its German page does not. ASUS's documents, as read, tie the North American case to the NEMA 5-20P plug and give 200 to 240 V for all other regions. The arithmetic for a 230 V office circuit, the heat and the placement are collected in our article on DGX Station GB300 power and cooling in an office.

The 50 dB statement, the cooling and the room temperature

ASUS describes "A data center-grade thermal architecture with closed-loop AIO liquid cooling". Of the makers' pages read for our research on 12 November 2026, ASUS's is the only one with a noise figure: the system "keeps acoustics to approximately 50 dB in Auto Mode at maximum load without a discrete VGA". The sentence carries three conditions: Auto Mode, maximum load, and a system without an added graphics card. ASUS names no measurement standard, no distance and no weighting. The figure can therefore not be set next to a figure from another maker's datasheet, and none is given for a system with the Max-Q card.

The operating temperature is 10 to 35 °C. Out of operation ASUS gives 5 to 40 °C at 20 to 90 % relative humidity, non-condensing. Gigabyte states the same operating range for its system, and Supermicro states 15 to 32 °C. With the Max-Q installed, ASUS's recommendation of under 30 °C during heavy workloads applies. At full load the room receives up to 1,600 W of heat.

Network ports, BMC and TPM

The tech-spec page lists "2 x NVIDIA ConnectX-8 SuperNIC QSFP112 ports" with the footnote "QSFP Transceiver Required.", and the datasheet marks the transceiver "Sold separately". NVIDIA rates these ports at 400 Gb/s each. The LAN port is "1 x Marvell 10G Ethernet", and "1 x Realtek 1Gb Ethernet (Dedicated management LAN for BMC)" serves the management network.

The QSFP ports come into use for a second DGX Station or a 400 Gb/s network; NVIDIA's playbook for two nodes joins the ports of two systems directly with two QSFP cables, without a switch.

ASUS names the management hardware: "ASPEED AST2600 with AMI MegaRAC based firmware supporting IPMI 2.0 and DMTF Redfish API", and "On-board TPM2.0". The BMC has its own Ethernet port, a USB Micro-B port and the mini DisplayPort at the back. Gigabyte's page for its system names neither the BMC chip nor Redfish nor a TPM. What a BMC with Redfish reports is covered in our article on GPU out-of-band monitoring.

ASUS ET900N G3 specs in one table

ASUS's product page and tech-spec page for the ASUS ExpertCenter Pro ET900N G3 and ASUS's datasheet (v4, undated), read 12 November 2026.

Besides the storage line, ASUS's documents differ from each other in two rows. The certifications read "CE, FCC (Class A), BSMI, cTÜV SÜD us, KCC" on the tech-spec page and "CE, FCC (Class A), BSMI, UL, KCC" in the datasheet. The datasheet labels the dimensions W × D × H, while the tech-spec page prints "584mm x 232mm x 565mm" without labels. ASUS's support page lists a user manual dated 1 September 2026, which was not read for this article. As the specifications are marked preliminary, have the rows your project depends on confirmed in writing.

Operating system and the software ASUS names

ASUS lists "Ubuntu with NVIDIA AI Developer Tools", the name NVIDIA uses for the supported operating system, and writes of "future support planned for Windows-based AI development and agentic environments". Plan on the Linux image until ASUS confirms another edition for the system in writing. The processor is an Arm design. NVIDIA's development guide gives the instruction set of the Grace CPU as Arm v9.0, and its porting section addresses Linux applications that move from x86_64: "The instruction set differs." Software that exists only as an x86 binary has to be checked before the order, a point our comparison of the DGX Station GB300 and an RTX PRO 6000 workstation takes up.

ASUS names four pieces of software: the NVIDIA AI software stack, NemoClaw, NVIDIA AI Enterprise and its own ASUS Zenni AI Hub. NVIDIA's product page says that enterprises can deploy on the DGX Station "with an NVIDIA AI Enterprise software license"; neither that page nor NVIDIA's datasheet states that a licence is included. We supply NVIDIA AI Enterprise licences, so they can be named in the same enquiry.

ASUS ET900N G3 and Gigabyte W775-V10-L01 by published figures

Both systems carry the same superchip, memory, network controller and slot layout, and both makers state an operating temperature of 10 to 35 °C. The table lists the points on which their documents differ.

ASUS's product page, tech-spec page and datasheet (v4) for the ASUS ExpertCenter Pro ET900N G3; Gigabyte's product page for the W775-V10-L01 and its datasheet (last updated 27 October 2026). All read 12 November 2026. ASUS's dimensions are reordered from W × D × H.

The table names no better system. The choice follows from what your site and your IT standards fix: drives included or chosen freely, the 600 W card, a named BMC with a TPM, a published noise figure. Our article on the Gigabyte W775-V10-L01 describes that system from Gigabyte's documents.

ASUS DGX Station GB300 price, service and order in the EU

ASUS's product page states "Includes onsite service after remote diagnosis" and adds that the service and its coverage vary by country or region. Ask for the service terms of your country in writing; what makers require from a site in general is in our article on on-site service for GPU servers. The manufacturer warranty is handled through us.

We supply the ASUS ExpertCenter Pro ET900N G3 per project, on one EU contract and invoice, and we publish no prices: the written quote states the price for the configuration. Write to us with the company, the project, the intended use and the configuration, or to request@eurokommerz.at, and we reply within one business day.

For rack servers of the same maker, see our article on the ASUS ESC8000 for the RTX PRO 6000 Server Edition.

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