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Adamant Custom

Adamant Custom 24-Core Ultra 9 285K RTX 5090 64GB DDR5 8TB NVMe gaming PC

SKU CH-6JK0-K80KK

A 24-core Intel Ultra 9 285K desktop with RTX 5090 32GB graphics, 64GB DDR5 memory and 8TB NVMe storage for rendering, AI work and high-refresh gaming

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 9 (Series 2)
  • RAM capacity64 GB DDR5
  • SSD storage8 TB NVMe
  • GraphicsGeForce RTX 5090
  • CPU modelIntel Core Ultra 9 285K
  • 24-core Ultra 9 285K powers heavy rendering and AI workloads
  • RTX 5090 32GB GPU accelerates 3D modelling and deep learning
  • 64GB DDR5 memory handles large datasets with room to 192GB
  • 8TB NVMe storage from dual 4TB Samsung 990 PRO drives
  • 1200W 80 PLUS Gold PSU and 360mm liquid cooling sustain peak performance

24-Core AI Workstation

The Adamant Custom desktop pairs a 24-core Intel Core Ultra 9 285K processor with an Nvidia GeForce RTX 5090 graphics card and 64GB of DDR5 memory. It ships with Windows 11 Pro and an 8TB NVMe storage array built from two 4TB Samsung 990 PRO drives. The system targets professionals running rendering, modelling and AI learning workloads.

Liquid-Cooled Tower Build

A 360mm liquid cooler handles the CPU while the Ceres 300 mid-tower case uses four 140mm fans rated at 1500rpm and 30dBA for airflow. The Thermaltake Toughpower 1200W 80 PLUS Gold power supply includes over-voltage, under-voltage, over-power and short-circuit protection. Front I/O provides one USB 3.2 Gen 2 Type-C, two USB 3.0 and HD audio; the rear adds Thunderbolt 4, USB 20Gbps and 10Gbps ports alongside 2.5Gbps LAN, Wi-Fi 7 and Bluetooth5.4.

Platform Limits and Expansion

The Z890 motherboard supports up to 192GB of DDR5 across four slots and offers four M.2 connectors plus four SATA 6Gb/s ports for additional drives. The case accepts one 3.5-inch or two 2.5-inch bays for supplementary storage. Buyers who need more than 8TB of high-speed NVMe capacity or a second graphics card will find the current configuration restrictive.

How it compares

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

Price $9,075.99
Pricier than about 91% 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).

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Specifications

Product
Year of release2026
Product colorBlack
Processor
ProcessorIntel Core Ultra 9 (Series 2)
CPU modelIntel Core Ultra 9 285K
CPU socketLGA 1851
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 5090
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

What Thunderbolt 4 bandwidth does the rear Type-C port provide?

The rear Thunderbolt 4 Type-C port delivers up to 40 Gbps for displays, storage and docks.

What case clearance is needed for the 360 mm liquid cooler?

The Ceres 300 mid-tower fits a 360 mm radiator at the front or top; allow 475 mm depth, 245 mm width and 463 mm height.

How are the two 4 TB Samsung 990 PRO drives installed, and what step is often missed?

Both drives slot into the motherboard M.2 sockets; the common miss is forgetting to remove the protective film on each thermal pad before securing the screws.

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