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Black rectangular tower workstation chassis with front panel ports and ventilation grille

ASUS

ASUS ExpertCenter Pro ET900A X9-B-2000 barebone pc

SKU CH-FPPD-Z835Q MPN ET900A X9-B-2000

Barebone workstation chassis supporting AMD Ryzen Threadripper PRO 7000 CPUs, eight-channel DDR5 ECC memory up to 2 TB, four PCIe 5.0 M.2 slots and dual 10 GbE LAN

  • ProcessorAMD Ryzen Threadripper Pro
  • Processor socketAMD Socket sTR5
  • ChipsetAMD WRX90
  • Installed memoryNo Memory
  • RAM slots8 × 288Pin ECC RDIMM
  • Supported memoryDDR5 5600
  • Supports AMD RYZEN Threadripper PRO 7000 WX-Series for high-performance computing
  • Up to 2TB DDR5 ECC RDIMM across 8 channels for reliable large-memory workloads
  • Four PCIe 5.0 x16 slots enable up to 4 NVIDIA Quadro RTX GPUs
  • Dual Intel 10GbE LAN provides high-bandwidth low-latency networking
  • Four PCIe 5.0 M.2 slots plus 4 SATA 6Gb/s ports for extensive storage expansion

AMD Threadripper Pro barebone

The ASUS ExpertCenter Pro ET900A X9-B-2000 is a barebone workstation chassis built around the AMD WRX90 chipset and sTR5 socket. It ships without a CPU or memory, allowing integrators to install a compatible AMD RYZEN Threadripper PRO 7000 WX-Series processor and up to 2TB of DDR5 5600 ECC RDIMM across eight channels. A 2000W power supply is included to support high-density configurations.

Suits multi-GPU AI and render builds.

This platform targets professionals who need up to four NVIDIA Quadro RTX graphics cards across seven PCIe 5.0 x16 slots for 3D rendering, simulation or AI training. Dual onboard 10GbE and USB 40Gbps Type-C support fast data movement. Builders requiring only a single GPU, consumer-grade memory or a smaller form factor should consider alternative platforms.

Eight-channel DDR5 ECC capacity

The defining specification is the eight-channel memory architecture supporting up to 2TB of DDR5 5600 ECC RDIMM in 288-pin modules. This bandwidth and capacity ceiling determines whether the workstation can hold the datasets and model sizes required for the intended workload.

How it compares

Measured against everything we stock in Desktop Barebone Systems, at today’s prices. Recalculated every night.

Price $1,896.99
Pricier than about 87% of the 28 comparable items (median $911.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameASUS
Model nameET900A X9-B-2000
Part number90WS0021-M000A0
Product colorBlack
Processor
ProcessorAMD Ryzen Threadripper Pro
Processor socketAMD Socket sTR5
CPU installedNone
ChipsetAMD WRX90
Memory
Installed memoryNo Memory
RAM slots8 × 288Pin ECC RDIMM
Supported memoryDDR5 5600
Maximum supported memory2 TB
Memory channel supported8 Channel
Storage
Installed storageNo Hard Drive
M.2 slotsAMD RYZEN Threadripper PRO 7000 Series Processors*
M.2_1 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
AMD WRX90 Chipset
SlimSAS_1 slot supports PCIe 4.0 x4 mode NVMe device
SlimSAS_2 slot supports PCIe 4.0 x4 mode NVMe device
* AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1/5/10.
3.5" internal bays4
5.25" external bays1
Audio & video
Built-in audioRealtek ALC1220P 7.1 Surround Sound High Definition Audio CODEC
Channel count7.1-CH
Connectivity
Primary LAN controllerIntel Dual 10Gb Ethernet
Maximum network speed10GbE
Ports & slots
Front USB ports1 x USB 20 Gbit/s Type-C port (15 W, 5Vdc/3A)
2 x USB 5 Gbit/s ports
1 x USB 2.0 port
Front audio jacks1 x Headphone port
1 x Microphone port
DisplayPort connectors2 x Mini DisplayPort
Rear USB ports2 x USB4 (40 Gbit/s) with ASMedia ASM4242 controller ports (2 x USB Type-C) (15 W, 5Vdc/3A)
6 x USB 10 Gbit/s ports (6 x Type-A)
1 x USB 2.0 port (1 x Type-A)
Ethernet port2
Rear audio jacks2 x Audio jacks
Additional rear ports1 x BIOS FlashBack button
1 x Clear CMOS button
Size & build
Product dimensions21.0 in × 9.5 in × 22.9 in
Shipping weight27.49 kg
Package size787 × 660 × 343 mm
In the box
In the box1 x Support DVD
1 x AC power cable
More details
EnvironmentOperation temperature: 10 °C to 35 °C
Non operation humidity: 20% ~ 90% (Non condensing)

Questions about this item

Does the ASUS ET900A X9-B-2000 come with a CPU, memory or storage, or must I buy them separately?

The barebone ships with no CPU, no DDR5 ECC RDIMM and no storage. You must add an AMD Ryzen Threadripper PRO 7000 WX-Series processor for the sTR5 socket, up to eight DDR5-5600 ECC RDIMMs (8 GB to 128 GB each) and M.2 or SATA drives.

Which DDR5-5600 ECC RDIMM capacities does the eight-channel memory controller officially support?

The board validates 8 GB, 16 GB, 24 GB, 32 GB, 48 GB, 64 GB and 128 GB ECC RDIMMs per slot, allowing a maximum of 2 TB across all eight 288-pin slots.

What does the 2000 W power supply mean for running four NVIDIA Quadro RTX cards and a Threadripper PRO 7000 CPU?

The 2000 W unit is rated to deliver enough headroom for a high-wattage Threadripper PRO 7000 processor plus up to four Quadro RTX GPUs installed in the PCIe 5.0 x16 slots, while also powering up to four M.2 drives, four SATA devices and dual 10 GbE LAN.

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