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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

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 9 (Series 2)
  • RAM capacity128 GB DDR5
  • SSD storage1 TB NVMe
  • GraphicsGeForce RTX 5090
  • CPU modelIntel Core Ultra 9 285K
  • 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.

How it compares

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

Price $8,841.99
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 colorBlack
Processor
ProcessorIntel Core Ultra 9 (Series 2)
CPU modelIntel Core Ultra 9 285K
CPU socketLGA 1851
Memory
RAM capacity128 GB DDR5
Memory slots4 total
Max supported RAM192 GB
Storage
SSD storage1 TB NVMe
Hard drive10 TB
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsGeForce RTX 5090
Audio & video
Audio chipIntegrated
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 6E
Network speed2.5 Gbit/s
Ethernet controllerIntegrated
Wi-Fi802.11ax Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorTower
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

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.

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