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Black mid-tower desktop with liquid cooling visible inside

Adamant Custom

Adamant Custom Business Desktop Ryzen 9 9900X 32GB 4TB NVMe 10TB HDD RTX A400 Liquid Cooled

SKU CH-RZ18-K2KHQ

Liquid-cooled business desktop with a 12-core Ryzen 9 9900X, 32 GB DDR5, 4 TB NVMe SSD, 10 TB HDD and an RTX A400 GPU for multi-display workstations

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity32 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelAMD Ryzen 9 9900X
  • 12-core Ryzen 9 9900X powers heavy workloads
  • 240 mm liquid cooler keeps CPU temperatures low
  • 4 TB NVMe SSD plus 10 TB HDD store large datasets
  • RTX A400 with four Mini DisplayPort outputs drives multi-monitor setups
  • Wi-Fi 7 and 2.5 Gb Ethernet give fast wired and wireless connectivity

Core Workstation Specs

This business desktop centres on a 12-core AMD Ryzen 9 9900X processor running at 4.4 GHz with a 240 mm liquid cooler. It ships with 32 GB of DDR5 memory, a 4 TB NVMe SSD and a 10 TB hard drive. An Nvidia RTX A400 graphics card provides four Mini DisplayPort outputs and 4 GB of video memory. Windows 11 Pro 64-bit is pre-installed.

Who It Suits

The machine targets professionals who need strong multi-threaded CPU performance and large local storage for data sets or media archives. The 2.5 Gb Ethernet and Wi-Fi 7 connectivity support modern office networks. Buyers who require more than 4 GB of GPU memory or multiple full-size DisplayPort connectors should evaluate other configurations.

Build Integration

The Antec P10 FLUX mid-tower case includes sound-dampening panels and a 750 W 80 PLUS Bronze power supply with a 140 mm fan. The X870 motherboard offers two USB4 ports, multiple 10 Gbps and 5 Gbps USB ports, plus four M.2 slots for future NVMe expansion. Internal bays accommodate three 3.5-inch and three 2.5-inch drives, leaving room for additional storage.

How it compares

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

Price $2,919.99
Cheaper than about 63% of the 2,161 comparable items (median $5,687.99).
RAM capacity 32 GB DDR5
Lower than about 70% of the 2,095 comparable items (median 64 GB).
SSD storage 4 TB NVMe
Higher than about 70% of the 2,058 comparable items (median 2 TB).

Specifications

Product
Year of release2026
Product typeBusiness Desktops & Workstations
Recommended useBusiness
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9000 Series
CPU modelAMD Ryzen 9 9900X
CPU socketAM5
Memory
RAM capacity32 GB DDR5
Max supported RAM192 GB
Storage
SSD storage4 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

Does the AMD Ryzen 9 9900X require a compatible AM5 motherboard to function in this system?

Yes, the CPU uses the AM5 socket and is paired with the X870-PLUS TUF motherboard included in this build.

Can I keep using my older SATA hard drives alongside the 10TB drive installed here?

The motherboard provides two SATA 6Gb/s ports, so additional SATA drives can be connected internally.

How can I verify the liquid cooler is operating correctly after the first boot?

Check that the 240mm AIO pump runs quietly and CPU temperatures stay low under load in Windows 11 Pro.

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