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Black tempered-glass desktop tower with liquid cooling visible inside

Adamant Custom

Adamant Custom 20-Core Core Ultra 7 265K 128GB DDR5 4TB NVMe 10TB HDD RTX PRO 2000 Blackwell Business Desktop

SKU CH-SD66-QXZS5

Business workstation with a 20-core Intel Core Ultra 7 265K, 128GB DDR5, 4TB NVMe SSD, 10TB HDD and Nvidia RTX PRO 2000 Blackwell graphics

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 7
  • RAM capacity128 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsNvidia RTX PRO 2000 Blackwell
  • CPU modelIntel Core Ultra 7 265K
  • 20-core Core Ultra 7 265K drives heavy multitasking
  • 128GB DDR5 handles large datasets smoothly
  • 4TB NVMe SSD loads projects fast
  • 10TB HDD stores massive asset libraries
  • RTX PRO 2000 Blackwell 16GB powers professional visualisation

20-Core AI Workstation

The Adamant Custom desktop pairs a 20-core Intel Core Ultra 7 265K processor with 128GB of DDR5 memory and an Nvidia RTX PRO 2000 Blackwell graphics card. It ships with Windows 11 Pro 64-bit and is configured for SolidWorks CAD modelling and AI-accelerated workloads.

Liquid-Cooled Z890 Platform

A 240mm liquid cooler manages CPU thermals inside a Corsair 4000D chassis powered by an 850W 80 PLUS Bronze supply. The Z890-PLUS TUF motherboard provides Thunderbolt 4, Wi-Fi 7, Bluetooth5.4, four M.2 slots and four SATA ports for the included 4TB NVMe SSD and 10TB hard drive.

30MB Cache 5.50GHz Boost Upgrade

The Core Ultra 7 265K delivers 20 threads with 30MB L3 cache and up to 5.50GHz maximum turbo frequency. The RTX PRO 2000 Blackwell adds 16GB VRAM for professional visualisation. Builders who need more than 192GB total memory or multiple GPU slots should verify motherboard limits before ordering.

How it compares

Measured against everything we stock in Business & Office Desktops, at today’s prices. Recalculated every night.

Price $5,176.99
Typical for this category: the median of 2,161 items is $5,687.99.
RAM capacity 128 GB DDR5
Higher than about 60% of the 2,095 comparable items (median 64 GB).
SSD storage 4 TB NVMe
Higher than about 70% of the 2,058 comparable items (median 2 TB).

Specifications

Product
Year of release2026
Product typeBusiness Desktops & Workstations
Recommended useWorkstation
Product colorBlack
Processor
ProcessorIntel Core Ultra 7
CPU modelIntel Core Ultra 7 265K
CPU socketLGA 1851
Memory
RAM capacity128 GB DDR5
Max supported RAM192 GB
Storage
SSD storage4 TB NVMe
Hard drive10 TB
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsNvidia RTX PRO 2000 Blackwell
GPU interfacePCI Express x16
VR readyYes
Audio & video
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 7
Network speed2.5 Gbit/s
Wired network2.5G Ethernet
Ethernet controllerIntegrated
Wi-Fi802.11be Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorDesktop
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro 64-bit
More details
Cooling methodLiquid Cooling
AI capabilityAI Ready

Questions about this item

How long can the 240 mm liquid cooler keep the 20-core Core Ultra 7 265K at full boost before it throttles?

The 240 mm Quiet Edition AIO is rated to handle the 20-core CPU under sustained load, but exact thermal throttle time depends on ambient temperature and case airflow.

What is the typical noise level of the 140 mm PSU fan and the AIO pump when the system runs all day?

The Thermaltake 850 W PSU uses a 140 mm ultra-quiet fan and the AIO is a Quiet Edition model; both are designed for low noise during continuous operation.

Does the Z890-PLUS TUF motherboard require a separate Wi-Fi antenna kit for WiFi7 to function?

The motherboard includes WiFi7 2x2 and Bluetooth5.4; antenna connectors are on the rear I/O and antennas are typically supplied with the board.

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