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

Adamant Custom

Adamant Custom Ryzen 9 9900X3D 128GB 4TB RTX 5070 gaming PC

SKU CH-666D-PXB5E

A liquid-cooled workstation desktop with a 12-core Ryzen 9 9900X3D CPU, 128GB DDR5 memory, 4TB NVMe SSD and RTX 5070 graphics

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity128 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsGeForce RTX 5070
  • CPU modelAMD Ryzen 9 9900 × 3D
  • 12-core Ryzen 9 9900X3D reaches 5.50 GHz for heavy multitasking
  • 128 GB DDR5 handles large datasets without swapping
  • 4 TB Samsung 990 PRO NVMe reads at 7450 MB/s for instant loads
  • RTX 5070 12 GB GPU accelerates creative and AI workloads
  • 240 mm liquid cooler keeps the CPU quiet under sustained load

Custom Ryzen 9 9900X3D workstation

This liquid-cooled desktop pairs a 12-core AMD Ryzen 9 9900X3D processor with 128GB DDR5 memory and a 4TB Samsung 990 PRO NVMe drive. The GeForce RTX 5070 graphics card adds 12GB video memory for creative workloads and high-refresh gaming. Windows 11 Pro is pre-installed on the mid-tower chassis.

Upgrade from smaller memory or slower storage

Builders moving from 64GB kits or PCIe 3.0 SSDs gain headroom for large datasets, virtual machines and 4K timelines. The four-slot motherboard supports up to 192GB total, so further expansion is possible without replacing modules. The 850W 80 PLUS Bronze power supply delivers stable current for the complete platform.

Sustained load behaviour

A 240mm quiet-edition liquid cooler keeps the CPU near its 5.50 GHz boost during long renders or compiles. Front 120mm intake fans and a 140mm PSU fan maintain positive airflow through the tempered-glass case. Intel 2.5Gb Ethernet and Wi-Fi 7 provide consistent throughput for network-bound tasks.

How it compares

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

Price $4,422.99
Pricier than about 81% of the 24,925 comparable items (median $2,694.99).
RAM capacity 128 GB DDR5
Higher than about 80% of the 24,338 comparable items (median 32 GB).
SSD storage 4 TB NVMe
Higher than about 70% 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 capacity128 GB DDR5
Memory slots4 total
Max supported RAM192 GB
Storage
SSD storage4 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 factorMid Tower
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

Questions about this item

What case clearance does the 240mm AIO liquid cooler require in the Antec P20 mid-tower?

The 240mm radiator fits in the front of the Antec P20 case which measures 469 mm deep by 220 mm wide by 490 mm high and has three 120mm front fans already installed.

Which motherboard power connectors must be seated for the Ryzen 9 9900X3D on the PRIME X870-P board?

Connect the 24-pin ATX cable and the 8-pin EPS CPU cable from the Thermaltake Smart 850W PSU; the board also needs the PCIe power cables for the RTX 5070 graphics card.

How many M.2 slots remain free for future SSD upgrades after the 4TB Samsung 990 PRO is installed?

The PRIME X870-P provides four M.2 connectors; one is occupied by the 4TB drive, leaving three slots available for additional NVMe storage.

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