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Black mid-tower desktop with tempered glass side panel and ARGB fans

Adamant Custom

Adamant Custom 20-Core Ultra 7 265K 128GB DDR5 2TB NVMe RTX 5090 Gaming PC

SKU CH-5C6N-DDZR9

A 20-core Intel Core Ultra 7 265K desktop with 128GB DDR5, 2TB NVMe storage and an RTX 5090 32GB GPU for gaming and AI workloads

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 7
  • RAM capacity128 GB DDR5
  • SSD storage2 TB NVMe
  • GraphicsGeForce RTX 5090
  • CPU modelIntel Core Ultra 7 265K
  • 20-core Intel Core Ultra 7 265K drives heavy multitasking and AI workloads
  • 128GB DDR5 memory handles large datasets and complex scenes without bottleneck
  • 2TB Samsung 990 PRO NVMe SSD delivers up to 7450 MB/s read speed
  • RTX 5090 32GB GPU accelerates rendering, modelling and real-time AI tasks
  • 240mm liquid cooler keeps the CPU quiet under sustained full load

Adamant Custom 20-Core Workstation

This Adamant Custom desktop pairs a 20-core Intel Core Ultra 7 265K with an Nvidia GeForce RTX 5090 32GB GPU. It includes 128GB DDR5 memory and a 2TB Samsung 990 PRO NVMe SSD. Liquid cooling and a 1000W 80 PLUS Gold PSU support sustained heavy workloads in a CoolerMaster HAF 500 case.

Suits AI training and 3D rendering

The specification targets professionals who need high GPU memory and many CPU threads for local model training or complex scene rendering. Buyers who only need general office applications or 1080p gaming will not use the available compute capacity.

32GB GPU memory decides fit

The RTX 5090 provides 32GB of video memory, the single figure that determines whether large models or high-resolution textures fit entirely on the card. If your workload exceeds that capacity, this system cannot accommodate it.

How it compares

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

Price $8,448.99
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 2 TB NVMe
Typical for this category: the median of 24,468 items is 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 storage2 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

Will the 203 mm wide CoolerMaster HAF 500 case fit on my desk?

The case measures 508 mm deep, 203 mm wide and 508 mm high, so check your desk clearance against those dimensions.

What is the trick to seating the 128 GB DDR5 memory correctly on the Z890 TUF motherboard?

Align the notch on each DDR5 module with the slot key, press straight down until both retention clips click, then verify 128 GB appears in BIOS.

When should I plan to replace the liquid in the 240 mm AIO cooler?

The sealed 240 mm AIO is maintenance-free for its service life; no liquid replacement is required.

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