The ASUS ExpertCenter Pro ET900N G3 puts NVIDIA’s GB300 Grace Blackwell Ultra platform in a deskside tower, pairing 748GB of coherent memory with workstation-style handles, a 1,600W Titanium-rated power supply, and extra airflow for its high-speed networking optics. Those details make it a distinctive local-AI system, but they do not make it portable or establish a universal performance or thermal guarantee: results depend on the workload, and ASUS’s advertised claims should be separated from the observations of the published hands-on review.
What the ET900N G3 is—and what stands out
The ET900N G3 is ASUS’s deskside implementation of NVIDIA’s GB300 Grace Blackwell Ultra platform on DGX Station architecture. ASUS lists a 72-core Grace CPU, Blackwell Ultra graphics and 748GB of coherent memory. The appeal is a large shared memory pool in a tower intended for local AI development and inference, rather than a conventional workstation built around separate, independently managed components.
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Three physical details set this system apart: two top carry handles, a 1,600W Titanium ATX power supply, and a small fan aimed at the ConnectX-8 network card’s QSFP112 cages. The handles make it easier to position or move for service, while the optics fan addresses heat around fiber transceivers. Neither feature changes the fact that the machine is a substantial, high-power deskside system.
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →ASUS lists up to 20 PFLOPS of AI performance; StorageReview specifies that figure as NVFP4 with sparsity. Treat it as a manufacturer specification, not a measure of expected throughput for every model or application. See the ASUS product page and StorageReview’s September 23, 2026 hands-on review for their respective product and test details.
#1 Best Overall
- CPU: AMD Ryzen7 5700X (up to 4.6GHz) 8-Core 16-Thread to easily handle multi-line tasks
- Main board: MSI B550M-A PRO motherboard provides reliable performance and stability
- GPU: Geforce RTX 5060 8GB GDDR7 Graphics Cards (Brand may vary) Support DLSS 4 multi frame generation, ray tracing, and Reflex 2 delay optimization
- RAM: 32GB DDR4 3200MHz (16GB*2) SSD: 1TB M.2 NVMe PCIe
- Power supply: 650W (80plus bronze) certified for energy efficiency and stable performance
748GB coherent memory: the current figure
ASUS’s current product information and June 2026 launch announcement list 748GB of coherent memory. StorageReview describes the platform’s memory as 252GB of HBM3e and 496GB of LPDDR5X. An earlier ASUS announcement from January 2026 gave a different total:
| Source and date | Memory figure | How to read it |
|---|---|---|
| ASUS product information and launch release, 2026 | 748GB coherent memory | Current published product figure |
| ASUS CES announcement, January 6, 2026 | 775GB coherent memory | Earlier announcement-era figure, superseded by later ASUS materials |
The discrepancy is a change in published figures, not evidence of two currently orderable memory configurations. For a buyer, the practical point is that the system is designed around a large coherent pool; whether that benefits a given model depends on its memory footprint and software stack.
Rank #2
- Legend perfected: Modern design with a matte basalt black finish in an optimized chassis with customizable AlienFX lighting zones, including the striking stadium lighting.
- Game changing graphics: Step into the future of gaming and creation with the NVIDIA GeForce RTX 5070 graphics, powered by NVIDIA Blackwell architecture.
- Marathon gaming unlocked: This high-performance technology ensures clean energy is consistently available, unleashing the top-level power of Intel Core Ultra 7 265F processor as you game, livestream, and multi-task for hours on end.
- Total command: Alienware Command Center software allows you to create and edit AlienFX lighting across the ecosystem, choose and monitor your performance mode across distinct power states, and create custom gaming profiles for your whole library.
- Dell Services: 1 Year Onsite Service provides support when and where you need it. Dell will come to your home, office, or location of choice, if an issue covered by Limited Hardware Warranty cannot be resolved remotely.
Handles and chassis: deskside, not portable
StorageReview reports a brushed-silver chassis with a dark mesh front and two handles on top. ASUS lists dimensions of 584 × 232 × 565 mm; the review reports a net weight of 27kg and gross shipping weight of 32kg. The handles are useful for a deliberate move or service access, but this is not a workstation to carry between regular work locations.
The review unit also included an RTX PRO 2000. That is an observation about the reviewed machine, not confirmation that every ET900N G3 configuration includes that card. Confirm the exact orderable configuration and included components with ASUS or the seller.
Rank #3
- POWERED BY RTX 5070 12GB + RYZEN 7 9700X - The GeForce RTX 5070 12GB GDDR7 graphics card pairs with an 8-core AMD Ryzen 7 9700X processor to drive smooth 1440p and 4K gameplay, giving this gaming PC the headroom for modern titles, streaming, and creative work.
- 32GB DDR5 6000MHz MEMORY & 1TB NVMe SSD - 32GB of high-speed DDR5 memory and a 1TB PCIe 4.0 NVMe solid state drive deliver quick load times, smooth multitasking, and generous storage, keeping this prebuilt gaming desktop responsive under heavy workloads.
- BUILT-IN 11.3-INCH Smart DISPLAY - An integrated smart screen shows real-time CPU and GPU temperatures, usage, and weather while you play, adding a distinctive and functional touch to your battlestation.
- 850W 80+ GOLD POWER SUPPLY, 360MM LIQUID COOLING & WiFi 7 - An 850W 80 Plus Gold certified power supply provides stable, efficient power with headroom for future upgrades, while a 360mm AIO liquid cooler, WiFi 7, and an ARGB mid-tower case keep the Ryzen 7 CPU cool and connected in a clean build.
- READY TO PLAY OUT OF THE BOX - Arrives fully assembled and tested with Windows 11 Home pre-installed, so your prebuilt gaming computer is ready to set up in minutes. Assembled in the USA, and backed by a one-year limited warranty and lifetime free technical support.
Why the networking optics have their own fan
The system includes ConnectX-8 networking with two QSFP112 400GbE ports, alongside 10GbE LAN and a separate 1GbE BMC management interface. The QSFP112 cages can accept fiber transceivers or direct-attach copper (DAC) cabling; ASUS lists 400G transceivers as optional, so their inclusion should not be assumed.
In the reviewed system, the GB300, SOCAMM modules and ConnectX-8 had copper cold plates connected to radiators at the front and top, with a rear chassis fan. StorageReview also observed a smaller fan over the ConnectX-8 cold plate, blowing across the QSFP112 cages. The cold plate cools the network chip itself; the separate airflow is relevant because optical transceivers in the cages also produce heat. The review says this fan matters less when using DAC cables, making it most relevant to sustained fiber use.
Rank #4
- AMD Ryzen 7 9850X3D 4.7GHz (5.6GHz Turbo Boost) CPU Processor | 2TB Gen4 NVMe M.2 SSD – Up to 30x Faster Than Traditional HDD | 360mm AIO Liquid CPU Cooler with ARGB Fans, say goodbye to outdated and inefficient air coolers.
- AMD Radeon RX 9070 XT 16GB GDDR6 Graphics Card (Brand may vary) | 32GB DDR5 RAM 5600 Gaming Memory with Heat Spreader | Windows 11 Home
- High-spec AIO liquid coolers used, delivering unmatched cooling performance for a perfect operational experience and unparalleled cooling performance. With hardware unrestricted by temperature limits, you can unleash its full potential. Whether gaming, creating, or working, you'll never suffer from thermal throttling again. | Skytech Azure Gaming Case with Tempered Glass, Black | 1 Year Warranty on Parts and Labor | Free Technical Support | Assembled in the USA
- This powerful gaming PC is capable of running all your favorite games such as Elden Ring Nightreign, Baldur's Gate 3, Cyberpunk 2077, Hogwarts Legacy, Helldivers 2, Diablo IV, Starfield, Valorant, Counter-Strike 2, Forza Horizon 5, Resident Evil 9, Alan Wake 2, Warhammer 40,000: Space Marine 2, God of War Ragnarök, Overwatch 2, Dragon's Dogma 2, Marvel's Spider-Man, Clair Obscur: Expedition 33,, more at Ultra settings, detailed 4K Ultra HD resolution, and smooth 60+ FPS gameplay.
If deploying fiber, check transceiver compatibility and regional availability before ordering. The ASUS technical page notes optional transceivers and regional power details, but does not establish a complete compatible accessory list for every configuration: ASUS technical specifications.
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Cooling design and the limits of the thermal claim
ASUS describes a closed-loop AIO cooling system and claims sustained full-load operation without thermal throttling. StorageReview’s inspection provides useful design context—the cold plates, radiators, fans and airflow across the optics—but does not establish that the system will never throttle across all workloads, ambient temperatures or installations. ASUS specifies an operating temperature range of 10–35°C. Real thermal behavior still depends on the workload and operating environment.
Best Value
- POWERHOUSE 8-CORE GAMING PERFORMANCE — Driven by the AMD Ryzen 7 8700F with 8 cores and 16 threads, boosting up to 5.0 GHz for smooth, responsive gameplay and the ability to handle AAA titles, streaming, and background tasks all at once
- NEXT-GEN BLACKWELL ARCHITECTURE — The NVIDIA GeForce RTX 5070 is powered by NVIDIA's cutting-edge Blackwell GPU architecture, delivering a massive generational leap in rasterization and ray tracing performance so you can experience your games the way they were meant to be played.
- Simplistic Design: Enjoy the latest generation of Windows 11 Home for your everyday needs. *MSI recommends Windows 11 Pro for business use.
- Cool While Gaming: In conjunction with an ARGB fan Air Cooler, the Codex R2 features four system cooling fans; three in the front and one in the rear to pull in cool air and push heat out of the PC.
- Turn on the Bright Lights: With the built-in RGB lighting, take your gaming experience to the next level by pressing the MSI LED button to cycle through lighting options. Customize lighting even further with MSI Center software.
What the performance figures do—and do not—show
The published numbers come from different sources and test conditions, so they should not be read as a direct head-to-head comparison. ASUS’s launch announcement reports its engineering team’s extended vLLM stress test; StorageReview reports tests on its review unit with named models and workload details.
| Source and workload | Reported result | Important context |
|---|---|---|
| ASUS, June 15, 2026: Qwen vLLM test | Approximately 864 output tokens/s | ASUS does not identify the model details in this result |
| ASUS, June 15, 2026: extended vLLM stress test | Approximately 1,600 combined input/output tokens/s | Combined input and output figure; not directly comparable to output-only throughput |
| StorageReview: Mistral Small 24B FP8, equal 512 input/512 output workload | 11,075 output tokens/s | Review-unit result under the stated model and workload |
| StorageReview: Mistral Small 24B FP8, long-prompt test | 2,302 output tokens/s at 128 streams | Different prompt and concurrency conditions from the equal 512/512 test |
| StorageReview: Qwen3 Coder 30B FP8, equal input/output workload | 319 output tokens/s at one stream; 12,439 at 128 streams | Shows how strongly aggregate throughput changes with concurrency |
These results are not a single system-speed rating. Model, precision, prompt and output lengths, serving software, and stream count all affect throughput; aggregate tokens per second at high concurrency also do not tell you the latency a single user will experience. ASUS’s launch figures are at its June 15, 2026 announcement, while the named benchmark results are in StorageReview’s review.
Power, storage, connectivity and software
| Area | Published or observed detail | Buying implication |
|---|---|---|
| Power | ASUS lists a 1,600W Titanium ATX supply and 115–240Vac input. Maximum output depends on regional input voltage and cord assembly. | Confirm the power requirements and supplied cord for the destination region. Titanium is a certification descriptor, not proof of a particular energy saving in this system. |
| Storage | ASUS’s product table lists up to four M.2 2280 PCIe 5.0 NVMe drives and 8TB total. The reviewed unit had two 2TB PCIe 5.0 boot drives in RAID 1 and two factory-open expansion slots; the review says ASUS specified those expansion slots as PCIe 6.0. | These are not interchangeable configuration claims. Verify slot generation, populated drives, RAID setup and supported capacity for the exact system being quoted. |
| Ports and network | ASUS lists rear QSFP 400G ports, 10GbE LAN, BMC 1GbE and front USB. StorageReview identifies two QSFP112 400GbE ports on ConnectX-8. | Plan fiber transceivers or DACs according to the deployment; do not assume optional optics are included. |
| Operating system | ASUS lists Ubuntu with NVIDIA AI Developer Tools. Windows-based AI development support is described as planned, without an arrival date in the researched product materials. | For a Windows-dependent workflow, obtain a confirmed compatibility and availability answer before purchase. |
Who should consider it—and what to verify first
The ET900N G3 is most compelling for organizations or developers whose local AI workloads can use the GB300 platform and its coherent memory, and who value a deskside system with high-speed networking. It is less straightforward to evaluate if the priority is quiet, low-power general workstation use, easy portability, or a guaranteed performance number independent of model and serving conditions.
Before committing, ask the vendor to confirm the details that can vary by region or order:
- The current price, exact configuration and included components; no verified street price or complete region-specific configuration is established in the cited materials.
- Whether the selected memory and storage configuration matches the workload, including the expansion-slot specification and the exact drives installed.
- Required power input and cord assembly for the destination region, plus any site requirements for the system’s 1,600W supply.
- Whether fiber transceivers are included or need to be sourced separately, and compatibility for the intended network.
- Ubuntu/software support requirements and a confirmed Windows support status if Windows-based AI development is essential.
ASUS’s January CES announcement used the earlier 775GB memory figure; subsequent product materials list 748GB. The earlier notice is available in ASUS’s January 6, 2026 CES announcement.
Quick Recap
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