We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black tower case with tempered glass side panel, liquid cooling radiator visible, RTX 5090 graphics card installed

Adamant Custom

Adamant Custom Intel Core Ultra 9 285K RTX 5090 128GB DDR5 gaming PC

SKU CH-T40W-67EXH

A 24-core Intel Core Ultra 9 285K and RTX 5090 32 GB GPU desktop with 128 GB DDR5, 1 TB NVMe SSD and 10 TB HDD for rendering, AI workloads and high-end gaming

  • 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
  • 24-core Intel Core Ultra 9 285K powers heavy multitasking and AI workloads
  • Nvidia GeForce RTX 5090 with 32GB VRAM drives 4K gaming and creative rendering
  • 128GB DDR5 memory handles large datasets and complex simulations
  • 1TB Samsung 990 PRO NVMe SSD delivers 7450 MB/s read speed
  • 360mm liquid cooler keeps CPU temperatures low under sustained load

Ready-built workstation for rendering and AI

This Adamant Custom desktop arrives assembled with a 24-core Intel Core Ultra 9 285K, 128GB DDR5 memory and an Nvidia GeForce RTX 5090 32GB GPU. The 1TB Samsung 990 PRO NVMe drive and 10TB hard disk give fast boot and deep project storage. Windows 11 Pro 64-bit is pre-installed so the system is ready for heavy creative workloads immediately.

Installation notes and common pitfalls

The tower uses a Corsair 4000D chassis measuring 490 x 239 x 486 mm with a 360 mm liquid cooler already mounted. Front I/O includes one USB 3.2 Type-C and two USB 3.2 Gen 1 ports plus an audio combo jack. Rear I/O adds USB4 Type-C, USB 3.2 Gen 2, four USB 3.2 Gen 1 and four USB 2.0 ports. Builders sometimes forget to connect the 2.5 Gbps Ethernet or Wi-Fi 6E antennas before first boot.

Pre-order checklist for your environment

Verify that your desk or rack can accommodate the 490 mm depth and 486 mm height of the case. Confirm the 1200 W 80 PLUS Gold power supply matches your local mains voltage and that you have a grounded outlet. The motherboard provides four M.2 slots and four SATA 6 Gb/s ports with RAID 0, 1, 5, 10 support if you plan to add drives later. Maximum memory supported is 192 GB across four DDR5 slots.

Highlights

  • 24-core Intel Core Ultra 9 285K powers heavy multitasking and AI workloads
  • Nvidia GeForce RTX 5090 with 32GB VRAM drives 4K gaming and creative rendering
  • 128GB DDR5 memory handles large datasets and complex simulations
  • 1TB Samsung 990 PRO NVMe SSD delivers 7450 MB/s read speed
  • 360mm liquid cooler keeps CPU temperatures low under sustained load

Specifications

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
SSD1TB NVMe
HDD10TB
Operating SystemWindows 11 Pro
Form FactorTower
Release Year2026
AI FeaturesAI Ready
ColorBlack
Cooling SystemLiquid Cooling
Windows 11Ready
LAN Speed2.5Gbps
WiFi GenerationWi-Fi 6E
LAN ChipsetIntegrated
WLAN802.11ax Wireless LAN
BluetoothBluetooth 5.4
Optical Drive TypeNo
Screen SizeNo Screen
Audio ChipsetIntegrated
Audio Channels7.1 channels
RJ451 port

Questions about this item

How do I verify the 24-core Intel Core Ultra 9 285K is running at up to 5.70 GHz after setup?

Open Task Manager in Windows 11 Pro, select the Performance tab and watch the CPU clock speed under load; it should reach 5.70 GHz on the 285K.

What ships inside the Corsair 4000D case and what must I add?

The box contains the assembled tower with 128GB DDR5, 1TB Samsung 990 PRO SSD, 10TB HDD, RTX 5090 32GB, 360mm AIO cooler, 1200W Gold PSU, Wi-Fi 6E and Windows 11 Pro. Only a monitor, keyboard and mouse are needed separately.

Which memory capacity matches the 128GB DDR5 fitted to the Z890 UD motherboard?

The system arrives with 128GB DDR5 installed across the four slots; the board supports up to 192GB if you later add more DDR5 modules.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.