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Black Corsair 4000D tower with tempered glass side panel and liquid cooling radiator visible inside

Adamant Custom

Adamant Custom Ryzen 9 9900X 12-Core Liquid Cooled 128GB 2TB NVMe 10TB HDD RTX A400 Business Desktop

SKU CH-KA7V-KVJDJ

Liquid-cooled 12-core Ryzen 9 workstation with 128GB DDR5, 2TB NVMe SSD, 10TB hard drive and RTX A400 graphics for professional workloads

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity128 GB DDR5
  • SSD storage2 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelAMD Ryzen 9 9900X
  • 12-core Ryzen 9 9900X powers heavy multi-threaded workloads
  • 128GB DDR5 enables large datasets and virtual machines
  • 2TB NVMe SSD delivers 7450 MB/s read speed
  • 10TB HDD adds high-capacity bulk storage
  • RTX A400 drives four displays via MiniDP

Adamant Custom Ryzen 9 9900X Workstation

This liquid-cooled business desktop pairs a 12-core AMD Ryzen 9 9900X processor with 128 GB of DDR5 memory and an Nvidia RTX A400 graphics card. A 2 TB NVMe SSD and a 10 TB hard drive provide fast boot and ample archival storage. Windows 11 Pro 64-bit is pre-installed on the X870 motherboard platform.

Suited for compute-intensive workloads

Professionals running multi-threaded applications, large datasets or virtual machines will benefit from the 12-core CPU, high-capacity DDR5 and professional GPU with four Mini DisplayPort outputs. Buyers who need more than 4 GB of video memory or require multiple full-size DisplayPort or HDMI connections should consider other configurations.

128 GB DDR5 memory installed

The system ships with 128 GB of DDR5 and the motherboard supports up to 192 GB total. Confirm that this capacity matches your workload before purchase, as memory generation and maximum supported capacity determine upgrade paths.

How it compares

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

Price $4,104.99
Cheaper than about 58% 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 2 TB NVMe
Typical for this category: the median of 2,058 items is 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 storage2 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

Will the 128GB DDR5 memory and X870 motherboard support my existing AM5 cooler upgrade?

The system uses a 240mm AIO liquid cooler on the AM5 socket; the X870 board supports up to 192 GB DDR5, so your cooler must match AM5 mounting.

How can I confirm the Samsung 990 PRO 2TB NVMe is running at PCIe 4.0 speeds after setup?

Check the drive reads near 7450 MB/sec and writes near 6900 MB/sec in CrystalDiskMark or the BIOS NVMe information screen.

Does the RTX A400 include four Mini DisplayPort cables or adapters for my older monitors?

The card provides 4x MiniDP outputs; cables or MiniDP-to-DisplayPort/HDMI adapters are not included and must be purchased separately.

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