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Adamant Custom

Adamant Custom Ryzen 9 9900X3D 64GB DDR5 8TB NVMe RTX 5070 Gaming PC

SKU CH-XJBH-8DN4F

A liquid-cooled tower with a 12-core Ryzen 9 9900X3D, 64 GB DDR5, dual 4 TB NVMe drives and an RTX 5070 for high-end gaming and workstation tasks

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity64 GB DDR5
  • SSD storage8 TB NVMe
  • GraphicsGeForce RTX 5070
  • CPU modelAMD Ryzen 9 9900 × 3D
  • 12-core Ryzen 9 9900X3D handles heavy workloads
  • 64GB DDR5 memory supports multitasking smoothly
  • 8TB NVMe storage holds large project files
  • RTX 5070 12GB GPU accelerates creative apps
  • 240mm liquid cooling keeps temperatures low

Built for 12-core creative workloads

This desktop pairs a 12-core AMD Ryzen 9 9900X3D processor with 64GB of DDR5 memory and an Nvidia GeForce RTX 5070 graphics card. The system ships with Windows 11 Pro and an 8TB NVMe storage array built from two 4TB Samsung 990 PRO drives. Liquid cooling keeps the CPU stable during long rendering or compile sessions.

Steps up from 8-core or air-cooled builds

Moving from an 8-core CPU to this 12-core design adds 50 percent more threads for parallel tasks such as video encoding or virtualisation. The 240mm liquid cooler replaces a standard air tower, lowering thermal resistance so the processor can hold higher frequencies longer. The jump is worth it when your current workstation throttles during sustained multi-core loads.

Sustained load behaviour with liquid cooling

Under continuous load the 240mm AIO maintains lower coolant temperatures than an air cooler, allowing the Ryzen 9 9900X3D to stay near its 5.50 GHz boost ceiling without hitting thermal limits. The Thermaltake 850W Bronze power supply delivers stable current to both CPU and GPU during extended sessions. The Antec P20 case moves air through three front 120mm fans and dust filters to keep internal temperatures steady over hours.

How it compares

Measured against everything we stock in Gaming PCs, at today’s prices. Recalculated every night.

Price $4,024.99
Pricier than about 77% of the 24,925 comparable items (median $2,694.99).
RAM capacity 64 GB DDR5
Higher than about 60% of the 24,338 comparable items (median 32 GB).
SSD storage 8 TB NVMe
Higher than about 99% of the 24,468 comparable items (median 2 TB).

New to this? Buying a gaming PC with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Year of release2026
Product typeBusiness Desktops & Workstations
Recommended useWorkstation
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9000 Series
CPU modelAMD Ryzen 9 9900 × 3D
CPU socketAM5
Memory
RAM capacity64 GB DDR5
Memory slots4 total
Max supported RAM192 GB
Storage
SSD storage8 TB NVMe
Hard driveNo
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsGeForce RTX 5070
GPU interfacePCI Express x16
Audio & video
Audio chipIntegrated
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 7
Network speed2.5 Gbit/s
Ethernet controllerIntegrated
Wi-Fi802.11be Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorTower
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

Questions about this item

Will the 469 mm deep Antec P20 case fit on my desk?

The chassis measures 469 mm deep by 220 mm wide by 490 mm high, so allow at least that footprint plus cable clearance behind the rear I/O panel.

What is the trickiest step when adding more DDR5 memory later?

The motherboard has four slots total; populate the two empty slots first and enable EXPO in the BIOS or the new modules may run at base speed.

When should I plan to clean the 240 mm liquid cooler radiator?

Vacuum the radiator fins every 6 to 12 months through the front dust filter to keep the 140 mm fan airflow unrestricted.

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