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

Adamant Custom

Adamant Custom Core Ultra 9 285K RTX 5090 64GB DDR5 4TB NVMe Z890 TUF gaming PC

SKU CH-KAYN-Y034B

A 24-core Intel Core Ultra 9 285K desktop with 64GB DDR5, 4TB NVMe storage and an RTX 5090 32GB GPU for rendering, modelling and AI workloads

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 9 (Series 2)
  • RAM capacity64 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsGeForce RTX 5090
  • CPU modelIntel Core Ultra 9 285K
  • 24-core Intel Core Ultra 9 285K reaches 5.70 GHz for heavy rendering workloads
  • GeForce RTX 5090 with 32 GB VRAM accelerates AI learning and 3D modelling
  • 64 GB DDR5 memory expandable to 192 GB supports large dataset processing
  • 4 TB Samsung 990 PRO NVMe delivers 7450 MB/s reads for fast asset loading
  • 360 mm liquid cooler and 1200 W 80 PLUS Gold PSU sustain peak performance quietly

24-core workstation for rendering and AI

This desktop pairs a 24-core Intel Core Ultra 9 285K with an Nvidia GeForce RTX 5090 32GB GPU and 64GB of DDR5 memory. It is built for professionals running heavy rendering, modelling and AI learning workloads that demand high single-thread speed and massive parallel throughput. The system ships with Windows 11 Pro on a 4TB NVMe drive.

64GB DDR5 with 192GB ceiling

The board populates two of four slots with 64GB of high-performance DDR5, leaving two slots open for expansion up to the 192GB maximum supported by the Z890 platform. The 4TB Samsung 990 PRO SSD delivers sequential reads up to 7450 MB/sec and writes up to 6900 MB/sec over a PCIe 4.0 x4 link, providing fast scratch space for active projects.

Z890 connectivity and 1200W headroom

Rear I/O includes one Thunderbolt 4 Type-C port, one USB 20Gbps Type-C, three USB 10Gbps and three USB 5Gbps ports alongside 2.5Gbps Ethernet and Wi-Fi 7 2x2 wireless. The Thermaltake Toughpower 1200W 80 PLUS Gold unit powers the 360mm liquid CPU cooler, the RTX 5090 and all drives with overhead for future GPU upgrades within the mid-tower chassis.

How it compares

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

Price $8,445.99
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 4 TB NVMe
Higher than about 70% 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 storage4 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 factorMid Tower
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

Questions about this item

Can I add more DDR5 memory later to reach the 192GB maximum on this Z890 board?

Yes, the motherboard has four DDR5 slots total and supports up to 192GB, so you can populate the remaining slots with compatible DDR5 modules.

How can I confirm the RTX 5090 and Core Ultra 9 285K are running at their rated speeds after assembly?

Open Task Manager or GPU-Z to verify the GPU shows 32GB VRAM and the CPU hits its 5.70 GHz boost clock under load.

Which accessories are included in the box and what must I supply myself?

The system ships fully assembled with Windows 11 Pro, 64GB DDR5, 4TB Samsung 990 PRO SSD, RTX 5090, 1200W PSU, liquid cooler, Wi-Fi 7 and Bluetooth 5.4; you only need a monitor, keyboard and mouse.

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