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Black tower case with tempered glass side panel and liquid cooling visible inside

Adamant Custom

Adamant Custom Intel Core Ultra 9 285K RTX 5090 128GB DDR5 8TB NVMe Gaming PC

SKU CH-4B7N-3TT4M

A 24-core Intel Core Ultra 9 285K and GeForce RTX 5090 32GB desktop with 128GB DDR5, 8TB NVMe storage and liquid cooling for rendering, AI learning and high-end gaming

  • Release Year2026
  • Form FactorTower
  • AI FeaturesAI Ready
  • ColorBlack
  • Cooling SystemLiquid Cooling
  • Operating SystemWindows 11 Pro
  • 24-core Intel Core Ultra 9 285K drives heavy rendering and AI workloads
  • GeForce RTX 5090 with 32 GB VRAM accelerates 4K gaming and creative apps
  • 128 GB DDR5 memory handles massive datasets and multitasking
  • 8 TB NVMe storage from dual Samsung 990 PRO drives loads projects instantly
  • 360 mm liquid cooler keeps the CPU quiet under sustained loads

24-Core Workstation for AI and Rendering

This desktop pairs a 24-core Intel Core Ultra 9 285K with an Nvidia GeForce RTX 5090 32GB GPU and 128GB DDR5 memory. It targets professionals running local AI learning, 3D modelling and high-resolution video editing workloads. The system ships with Windows 11 Pro installed on an 8TB NVMe array.

360mm Liquid Cooling and 1200W Gold PSU

A 360mm quiet-edition AIO cooler handles the CPU while an ultra-quiet 140mm fan runs inside the Thermaltake Toughpower 1200W 80 PLUS Gold supply. The PSU uses Japanese main capacitors and provides over-voltage, under-voltage, over-power and short-circuit protection. Liquid cooling and the low-noise fan keep acoustics restrained during sustained compute tasks.

Corsair 4000D Case with Front USB-C and Rear USB4

The tempered-glass tower measures 490 x 239 x 486 mm and offers internal bays for two 3.5-inch and two 2.5-inch drives. Front I/O includes one USB 3.2 Type-C, two USB 3.2 Gen 1 and a combo audio jack. Rear I/O adds one USB4 Type-C, one USB 3.2 Gen 2, four USB 3.2 Gen 1 and four USB 2.0 ports plus Intel 2.5Gb Ethernet, Wi-Fi 6E and Bluetooth 5.3.

Highlights

  • 24-core Intel Core Ultra 9 285K drives heavy rendering and AI workloads
  • GeForce RTX 5090 with 32 GB VRAM accelerates 4K gaming and creative apps
  • 128 GB DDR5 memory handles massive datasets and multitasking
  • 8 TB NVMe storage from dual Samsung 990 PRO drives loads projects instantly
  • 360 mm liquid cooler keeps the CPU quiet under sustained loads

Specifications

Release Year2026
Form FactorTower
AI FeaturesAI Ready
ColorBlack
Cooling SystemLiquid Cooling
Operating SystemWindows 11 Pro
Windows 11Ready
CPU TypeIntel Core Ultra 9 (Series 2)
CPU NameIntel Core Ultra 9 285K
CPU Socket TypeLGA 1851
GPU/VGA TypeGeForce RTX 5090
Memory Capacity128GB DDR5
Memory Slots (Available/Total)4 total
Maximum Memory Supported192 GB
SSD8TB NVMe
HDDNo
Optical Drive TypeNo
Screen SizeNo Screen
Audio ChipsetIntegrated
Audio Channels7.1 channels
LAN ChipsetIntegrated
LAN Speed2.5Gbps
WLAN802.11ax Wireless LAN
WiFi GenerationWi-Fi 6E
BluetoothBluetooth 5.4
RJ451 port

Questions about this item

How do I install the 360 mm liquid cooler in the Corsair 4000D case, and which step is often missed?

Mount the 360 mm radiator at the top or front using the included brackets, then connect the pump header to the CPU_FAN connector on the Z890 UD motherboard; the step most builders forget is plugging the pump tach cable into CPU_FAN so the BIOS can monitor pump speed.

What maintenance or replacement will the liquid cooler and the 1200 W PSU need over time?

The sealed 360 mm AIO requires no coolant refill, but plan to clean the radiator fins and replace the 140 mm fans every few years; the Thermaltake Toughpower 1200 W 80 PLUS Gold unit should have its dust filter cleaned annually and the fan checked for bearing noise after prolonged heavy loads.

Which thermal or power limit appears first when the Core Ultra 9 285K and RTX 5090 run sustained workloads?

The 1200 W Gold PSU caps total system draw, so under combined CPU and GPU stress the power limit is reached before the 360 mm liquid cooler saturates, causing the motherboard to throttle the 24-core processor to stay within the 1200 W envelope.

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