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Black Corsair 4000D mid-tower with tempered glass side panel and 240 mm liquid cooler visible inside

Adamant Custom

Adamant Custom Core Ultra 7 265K RTX 5090 128GB DDR5 1TB NVMe gaming PC

SKU CH-9HTN-CDZK0

A 20-core Intel Core Ultra 7 265K and GeForce RTX 5090 32GB desktop with 128GB DDR5 and 1TB NVMe storage, liquid-cooled in a Corsair 4000D case

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 7
  • RAM capacity128 GB DDR5
  • SSD storage1 TB NVMe
  • GraphicsGeForce RTX 5090
  • CPU modelIntel Core Ultra 7 265K
  • 20-core Intel Core Ultra 7 265K reaches 5.50 GHz for heavy multitasking
  • 128 GB DDR5 memory handles large datasets and 3D scenes
  • RTX 5090 32 GB GPU accelerates rendering and AI workloads
  • 1 TB Samsung 990 PRO NVMe SSD reads up to 7450 MB/s
  • 240 mm liquid cooler keeps CPU temperatures low under sustained load

20-Core Ultra 7 Workstation

This desktop pairs a 20-core Intel Core Ultra 7 265K processor with 128GB of DDR5 memory and a GeForce RTX 5090 graphics card. A 1TB NVMe SSD and liquid cooling complete the build for professional rendering, modelling and AI workloads. Windows 11 Pro is pre-installed on the Z890 platform.

Suits AI developers not casual gamers

The configuration targets users who need 32GB of GPU memory and 128GB of system memory for large dataset training or complex 3D scenes. Buyers who only require 1080p gaming performance or standard office productivity should look at a system with lower memory capacity and a smaller graphics card.

128GB DDR5 capacity drives the decision

Four memory slots are populated to reach 128GB with a maximum supported limit of 192GB. If your workload fits within 64GB or demands the full 192GB ceiling, a different memory configuration will be more appropriate.

How it compares

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

Price $7,929.99
Pricier than about 91% 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 1 TB NVMe
Lower 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 useWork / Business
Product colorBlack
Processor
ProcessorIntel Core Ultra 7
CPU modelIntel Core Ultra 7 265K
CPU socketLGA 1700
Memory
RAM capacity128 GB DDR5
Memory slots4 total
Max supported RAM192 GB
Storage
SSD storage1 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 factorDesktop
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

Questions about this item

How do I confirm the liquid CPU cooler is running after I power on the system?

The 240mm Quiet Edition water cooler spins its 140mm fan at low noise; you should hear gentle airflow and see coolant temperature stabilise in the motherboard monitoring utility within the first minute.

Which components are already installed and which must I source myself?

The chassis arrives with the Core Ultra 7 265K, 128GB DDR5, 1TB Samsung 990 PRO NVMe, RTX 5090 32GB, 1000W 80 PLUS Gold PSU, Z890 TUF motherboard, Wi-Fi 7 and Windows 11 Pro pre-installed; only peripherals and extra storage are optional.

Should I choose the 128GB DDR5 configuration or the 192GB maximum supported option?

The system ships with 128GB DDR5 across four slots; the Z890 board supports up to 192GB, so select 128GB now and add matching DDR5 modules later if workloads demand more capacity.

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