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Black mid-tower desktop with tempered glass side panel, liquid CPU cooler visible inside

Adamant Custom

Adamant Custom Core Ultra 7 265K 64GB 2TB NVMe 10TB RTX A400 4GB Liquid Black business desktop

SKU CH-ACTH-1YHRS

A 20-core Intel Core Ultra 7 265K workstation with 64 GB DDR5, 2 TB NVMe plus 10 TB HDD, RTX A400 graphics, liquid cooling and Wi-Fi 7

  • Screen sizeNo Screen
  • ProcessorIntel Core Ultra 7
  • RAM capacity64 GB DDR5
  • SSD storage2 TB NVMe
  • GraphicsNvidia RTX A400
  • CPU modelIntel Core Ultra 7 265K
  • 20-core Intel Core Ultra 7 265K delivers workstation-class throughput
  • 64 GB DDR5 memory handles large datasets and multitasking
  • 2 TB Samsung 990 PRO NVMe SSD provides fast boot and project loads
  • 10 TB hard drive adds high-capacity bulk storage
  • Nvidia RTX A400 4 GB with four Mini DisplayPort outputs drives multi-monitor setups

Workstation CPU and cooling

The Intel Core Ultra 7 265K delivers 20 cores and 20 threads with a 3.9 GHz base clock and up to 5.50 GHz boost. A 240 mm liquid cooler keeps temperatures steady during long rendering or compute sessions. The Z890 motherboard supports up to 192 GB of DDR5 for future expansion.

Sustained multi-core throughput

Under continuous load the 30 MB L3 cache and liquid cooling maintain high frequencies without thermal throttling. The 750 W 80 PLUS Bronze power supply provides stable delivery for the CPU, RTX A400 and storage array. Wi-Fi 7 and 2.5G Ethernet keep network transfers fast during extended workloads.

Storage and GPU upgrade path

The 2 TB NVMe SSD reaches 7450 MB/s read and 6900 MB/s write for active projects, while the 10 TB HDD with 256 MB cache holds large archives. The RTX A400 offers four Mini DisplayPort outputs for multi-monitor setups. Buyers who need more GPU memory or a second graphics card should look elsewhere.

How it compares

Measured against everything we stock in Business & Office Desktops, at today’s prices. Recalculated every night.

Price $3,089.99
Cheaper than about 63% of the 2,161 comparable items (median $5,687.99).
RAM capacity 64 GB DDR5
Typical for this category: the median of 2,095 items is 64 GB.
SSD storage 2 TB NVMe
Typical for this category: the median of 2,058 items is 2 TB.

Specifications

Product
Year of release2026
Product typeBusiness Desktops & Workstations
Recommended useWorkstation
Product colorBlack
Processor
ProcessorIntel Core Ultra 7
CPU modelIntel Core Ultra 7 265K
CPU socketLGA 1851
Memory
RAM capacity64 GB DDR5
Max supported RAM192 GB
Storage
SSD storage2 TB NVMe
Hard drive10 TB
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsNvidia RTX A400
GPU interfacePCI Express x16
VR readyYes
Audio & video
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 7
Network speed2.5 Gbit/s
Wired network2.5G Ethernet
Ethernet controllerIntegrated
Wi-Fi802.11be Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorDesktop
In the box
Included monitorNot included
Software
Operating systemWindows 11 Pro 64-bit
More details
Cooling methodLiquid Cooling
AI capabilityAI Ready

Questions about this item

How loud does the 240 mm liquid cooler and the 140 mm PSU fan run when the system is under sustained load?

The 240 mm Quiet Edition AIO and the Thermaltake Smart 750 W PSU with its ultra-quiet 140 mm fan are both specified for low noise levels during continuous operation.

What display cables or adapters will I need to connect monitors to the RTX A400 graphics card?

The RTX A400 provides four Mini DisplayPort outputs, so you will need Mini DisplayPort cables or Mini DisplayPort to DisplayPort/HDMI adapters for each monitor you attach.

Can the Z890 motherboard and 750 W power supply support an additional PCIe graphics card alongside the RTX A400?

The Z890-PLUS TUF board includes a PCI Express x16 slot used by the RTX A400 and the 750 W PSU offers Over Voltage, Under Voltage, Over Power and Short Circuit protection, leaving headroom for a second card if the total draw stays within 750 W.

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