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Black mid-tower desktop with liquid cooling visible inside

Adamant Custom

Adamant Custom 12-Core Liquid Cooled Business Desktop Ryzen 9 9900X 192GB DDR5 4TB NVMe 10TB HDD RTX A400 4GB

SKU CH-5C51-Y993S

Liquid-cooled 12-core Ryzen workstation with 192GB DDR5, 4TB NVMe, 10TB HDD and RTX A400 graphics

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity192 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelAMD Ryzen 9 9900X
  • 12-core Ryzen 9 9900X powers demanding workloads
  • 192 GB DDR5 memory handles large datasets
  • 4 TB NVMe SSD plus 10 TB HDD stores massive projects
  • RTX A400 4 GB drives four displays via MiniDP
  • 240 mm liquid cooler keeps CPU temperatures low

Business Desktop for Content Creation

This liquid-cooled workstation ships with a 12-core Ryzen 9 9900X processor, 192GB of DDR5 memory and a 4TB NVMe SSD paired with a 10TB hard drive. It targets creative professionals who need large local storage and multi-threaded compute in a single tower.

Sustained Load Behaviour

A 240mm AIO cooler and a case fitted with multiple 120mm fans plus a 140mm PSU fan move heat away from the CPU during long renders. The 750W 80 PLUS Bronze supply includes over-voltage, under-voltage, over-power and short-circuit protection for stable delivery.

Pre-Order Setup Checks

Verify that your monitors accept Mini DisplayPort inputs because the RTX A400 provides four such ports. Confirm you have desk space for a mid-tower measuring 477mm deep, 220mm wide and 486mm high, and that your network can use 2.5G Ethernet or Wi-Fi 7.

How it compares

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

Price $5,040.99
Typical for this category: the median of 2,161 items is $5,687.99.
RAM capacity 192 GB DDR5
Higher than about 80% 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 useContent Creation
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9000 Series
CPU modelAMD Ryzen 9 9900X
CPU socketAM5
Memory
RAM capacity192 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

How loud does the 240mm liquid cooler and the 140mm PSU fan run when the Ryzen 9 9900X is under sustained load?

The 240mm Quiet Edition AIO and the Thermaltake Smart 750W PSU with its ultra-quiet 140mm fan are both designed for low noise. The Antec P10 FLUX case adds sound-dampening panels and a front fan-control button to keep acoustic levels down during long render sessions.

Which display cables or adapters do I need to connect my monitors to the RTX A400 4GB card?

The RTX A400 provides four Mini DisplayPort outputs. You will need Mini DisplayPort to DisplayPort cables, or Mini DisplayPort to HDMI/DVI adapters, depending on the inputs your monitors use.

Can I keep using my existing SATA SSDs or 3.5-inch hard drives inside this chassis?

Yes. The motherboard includes two SATA 6Gb/s ports and the case has three internal 3.5-inch bays plus three 2.5-inch mounts, so current SATA drives can be installed alongside the 4TB NVMe boot drive and the 10TB HDD.

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