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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

  • Release Year2026
  • TypeBusiness Desktops & Workstations
  • Form FactorMid Tower
  • AI FeaturesAI Ready
  • UsageWorkstation
  • ColorBlack
  • 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.

Highlights

  • 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

Specifications

Release Year2026
TypeBusiness Desktops & Workstations
Form FactorMid Tower
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 5070
Graphics InterfacePCI Express x16
Memory Capacity128GB DDR5
Memory Slots (Available/Total)4 total
Maximum Memory Supported192 GB
SSD4TB 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

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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