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Black mid-tower desktop with tempered glass side panel and liquid cooling visible

Adamant Custom

Adamant Custom Ryzen 9 9900X Liquid Cooled Business Desktop 128GB 8TB NVMe 10TB HDD RTX A400

SKU CH-8VPD-GY3DS

A 12-core Ryzen 9 9900X workstation with liquid cooling, 128GB DDR5, 8TB NVMe plus 10TB HDD, and an RTX A400 GPU for professional workloads

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity128 GB DDR5
  • SSD storage8 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelAMD Ryzen 9 9900X
  • 12-core Ryzen 9 9900X reaches 5.20 GHz for heavy workloads
  • 128 GB DDR5 supports large datasets and multitasking
  • 8 TB NVMe storage delivers 7450 MB/s reads
  • 5 Gb Ethernet plus Wi-Fi 7 keeps transfers fast
  • 240 mm liquid cooler sustains performance with low noise

Built for heavy professional workloads

This business desktop combines a 12-core AMD Ryzen 9 9900X processor with 128GB of DDR5 memory and an Nvidia RTX A400 graphics card. A 240mm liquid cooler keeps the CPU stable under sustained compute tasks. The system ships with Windows 11 Pro and includes Wi-Fi 7 plus 2.5G Ethernet for fast network connectivity.

Storage speed and expansion limits

Two 4TB Samsung 990 PRO drives deliver up to 7450 MB/s read and 6900 MB/s write over PCIe 4.0. The motherboard provides four M.2 connectors in total, so two slots remain open for future NVMe expansion. A 10TB hard drive with 256MB cache adds bulk capacity for archives and backups.

Check your display and power setup

The RTX A400 offers four Mini DisplayPort outputs; verify that your monitors have compatible inputs or adapters. The 750W 80 PLUS Bronze power supply feeds all installed components, but adding further high-power cards may require a larger unit. The Antec P20 case measures 469 x 220 x 490 mm, so confirm desk or rack space before ordering.

How it compares

Measured against everything we stock in Business & Office Desktops, at today’s prices. Recalculated every night.

Price $4,630.99
Cheaper than about 55% of the 2,161 comparable items (median $5,687.99).
RAM capacity 128 GB DDR5
Higher than about 60% of the 2,095 comparable items (median 64 GB).
SSD storage 8 TB NVMe
Higher than about 90% of the 2,058 comparable items (median 2 TB).

Specifications

Product
Year of release2026
Product typeBusiness Desktops & Workstations
Recommended useWorkstation
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9000 Series
CPU modelAMD Ryzen 9 9900X
CPU socketAM5
Memory
RAM capacity128 GB DDR5
Max supported RAM192 GB
Storage
SSD storage8 TB NVMe
Hard drive10 TB
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsNvidia RTX A400
GPU interfacePCI Express x16
VR readyYes
Audio & video
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 7
Network speed2.5 Gbit/s
Wired network2.5G Ethernet
Ethernet controllerIntegrated
Wi-Fi802.11be Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorDesktop
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro 64-bit
More details
Cooling methodLiquid Cooling
AI capabilityAI Ready

Questions about this item

Should I pick the 128GB DDR5 configuration or plan for the 192GB maximum supported?

The system ships with 128GB DDR5 installed; the motherboard supports up to 192GB if your workloads later need more capacity.

What does the 4.4GHz base clock on the Ryzen 9 9900X mean for daily workstation tasks?

The 12-core CPU runs at 4.4GHz base and can boost to 5.20GHz, giving strong single-thread speed for CAD, compile and simulation workloads.

How does the PCI Express x16 slot limit the RTX A400 in this build?

The GPU uses a PCI Express x16 connection, providing full bandwidth for the 4GB RTX A400 and its four Mini DisplayPort outputs.

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