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

Adamant Custom

Adamant Custom Ryzen 7 9800X3D 128GB 4TB NVMe 10TB HDD RTX A400 Liquid Cooled business desktop

SKU CH-308P-ZT0AF

Liquid-cooled workstation with an 8-core Ryzen 7 9800X3D, 128 GB DDR5, 4 TB NVMe SSD, 10 TB HDD and an RTX A400 GPU

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 7 9000 Series
  • RAM capacity128 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelAMD Ryzen 7 9800 × 3D
  • 8-core Ryzen 7 9800X3D reaches 5.20 GHz for heavy workloads
  • 128 GB DDR5 supports multitasking and large datasets
  • 4 TB Samsung 990 PRO NVMe delivers 7450 MB/s reads
  • 10 TB hard drive adds 256 MB cache bulk storage
  • RTX A400 4 GB drives four MiniDP outputs

Purpose-built workstation

The Adamant Custom business desktop pairs an eight-core AMD Ryzen 7 9800X3D processor with 128GB of DDR5 memory, a 4TB NVMe SSD and a 10TB hard drive. An Nvidia RTX A400 graphics card with four Mini DisplayPort outputs drives multiple professional displays. Windows 11 Pro 64-bit is pre-installed on a platform designed for compute-intensive workflows.

Thermals and acoustics

A 240mm liquid cooler with a quiet-edition pump keeps the CPU at stable temperatures during sustained loads. The Corsair 4000D case moves air through a 140mm low-noise fan, while the Thermaltake Smart 850W 80 PLUS Bronze supply uses a Japanese main capacitor and protection circuits for clean power delivery. Together they maintain a quiet operating profile suitable for office environments.

Upgrade context

This system replaces older workstations that lack DDR5 bandwidth, PCIe 4.0 NVMe speeds of 7450 MB/s read and 6900 MB/s write, or 2.5G Ethernet and Wi-Fi 7 connectivity. It is not suited for buyers who need more than 4GB of GPU memory, additional PCIe x16 slots, or dual-socket CPU scaling. The motherboard supports up to 192GB of DDR5 for future expansion.

How it compares

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

Price $4,548.99
Cheaper than about 56% 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 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 useWorkstation
Product colorBlack
Processor
ProcessorAMD Ryzen 7 9000 Series
CPU modelAMD Ryzen 7 9800 × 3D
CPU socketAM5
Memory
RAM capacity128 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 is the 240 mm liquid cooler installed on the AM5 socket and what step is often missed?

The cooler mounts with the AM5 bracket supplied on the TUF X870-PLUS board; the step people miss is removing the plastic protector from the cold-plate before seating it.

Which component will need replacement first under heavy write workloads?

The 4 TB Samsung 990 PRO NVMe SSD is rated for sustained writes up to 6900 MB/s and will reach its endurance limit before the 10 TB HDD or the 128 GB DDR5 memory.

What thermal limit appears first during prolonged all-core loads on the Ryzen 7 9800X3D?

The CPU hits its 96 MB L3 cache thermal ceiling and throttles from the 5.20 GHz boost toward the 4.7 GHz base clock before the 240 mm AIO or the 850 W PSU become bottlenecks.

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