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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

  • Release Year2026
  • TypeBusiness Desktops & Workstations
  • Form FactorDesktop
  • AI FeaturesAI Ready
  • UsageWork / Business
  • ColorBlack
  • 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.

Highlights

  • 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

Specifications

Release Year2026
TypeBusiness Desktops & Workstations
Form FactorDesktop
AI FeaturesAI Ready
UsageWork / Business
ColorBlack
Cooling SystemLiquid Cooling
Operating SystemWindows 11 Pro
Windows 11Ready
CPU TypeIntel Core Ultra 7
CPU NameIntel Core Ultra 7 265K
CPU Socket TypeLGA 1700
GPU/VGA TypeGeForce RTX 5090
Memory Capacity128GB DDR5
Memory Slots (Available/Total)4 total
Maximum Memory Supported192 GB
SSD2TB NVMe
HDDNo
Optical Drive TypeNo
Screen SizeNo Screen
Audio ChipsetIntegrated
Audio Channels7.1 channels
LAN ChipsetIntegrated
LAN Speed2.5Gbps
WLAN802.11be Wireless LAN
WiFi GenerationWi-Fi 7
BluetoothBluetooth 5.4
RJ451 port

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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