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Black mid-tower desktop with tempered glass side panel

Adamant Custom

Adamant Custom Ryzen 9 9900X3D 128GB DDR5 2TB NVMe RTX 5090 gaming PC

SKU CH-31CC-3C0ZP

A 12-core Ryzen 9 9900X3D workstation with 128GB DDR5, 2TB NVMe and RTX 5090 for modelling, rendering and AI learning

  • Release Year2026
  • TypeBusiness Desktops & Workstations
  • Form FactorDesktop
  • AI FeaturesAI Ready
  • UsageWorkstation
  • ColorBlack
  • 12-core Ryzen 9 9900X3D hits 5.50 GHz for heavy workloads
  • 128 GB DDR5 handles large datasets without swapping
  • 2 TB Samsung 990 PRO delivers 7450 MB/s reads
  • RTX 5090 32 GB accelerates rendering and AI training
  • 240 mm liquid cooler keeps temperatures low under load

Built for AI workstations and 4K gaming

This desktop combines a 12-core AMD Ryzen 9 9900X3D processor with an Nvidia GeForce RTX 5090 32GB graphics card. It ships with 128GB of DDR5 memory and a 2TB Samsung 990 PRO NVMe SSD. Windows 11 Pro is pre-installed for immediate professional use.

Pre-assembled with liquid cooling installed

The 240mm AIO cooler and motherboard are mounted inside the tempered-glass case before dispatch. Buyers who want more storage can populate the two spare 3.5-inch bays or the two 2.5-inch bays. The four memory slots are fully occupied, so adding RAM requires replacing existing modules.

128GB DDR5 memory capacity

This figure determines whether the system can hold large datasets, complex scenes or multiple virtual machines without swapping. The board supports up to 192GB total across four slots. If your workload needs more than 128GB today, you must plan a module swap rather than a simple upgrade.

Highlights

  • 12-core Ryzen 9 9900X3D hits 5.50 GHz for heavy workloads
  • 128 GB DDR5 handles large datasets without swapping
  • 2 TB Samsung 990 PRO delivers 7450 MB/s reads
  • RTX 5090 32 GB accelerates rendering and AI training
  • 240 mm liquid cooler keeps temperatures low under load

Specifications

Release Year2026
TypeBusiness Desktops & Workstations
Form FactorDesktop
AI FeaturesAI Ready
UsageWorkstation
ColorBlack
Cooling SystemLiquid Cooling
Operating SystemWindows 11 Pro
Windows 11Ready
CPU TypeAMD Ryzen 9 9000 Series
CPU NameAMD Ryzen 9 9900X3D
CPU Socket TypeAM5
GPU/VGA TypeGeForce RTX 5090
Graphics InterfacePCI Express x16
Memory Capacity128GB DDR5
Memory Slots (Available/Total)4 total
Maximum Memory Supported192 GB
SSD2TB NVMe
HDDNo
Optical Drive TypeNo
Screen SizeNo Screen
Audio ChipsetIntegrated
Audio Channels7.1 channels
LAN ChipsetIntegrated
LAN Speed2.5Gbps
WLAN802.11be Wireless LAN
WiFi GenerationWi-Fi 7
BluetoothBluetooth 5.4
RJ451 port

Questions about this item

How do I verify the 12-core Ryzen 9 9900X3D is hitting its 5.50 GHz boost after assembly?

Open Task Manager’s Performance tab or run CPU-Z and watch the core clocks under load; sustained speeds near 5.50 GHz confirm the 240 mm liquid cooler is doing its job.

Which components ship inside the case and which must I source myself?

The case arrives fully assembled with the X870 TUF motherboard, 128 GB DDR5, 2 TB Samsung 990 PRO NVMe, RTX 5090 32 GB, 1200 W 80 PLUS Gold PSU, 240 mm AIO and Windows 11 Pro — only a monitor, keyboard and mouse are needed.

Should I choose the 128 GB DDR5 configuration or step up to the 192 GB maximum the board supports?

Stay with 128 GB if your workloads fit; move to 192 GB only when you regularly exceed 128 GB in rendering, AI training or heavy virtualization.

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