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Adamant Custom

Adamant Custom Ryzen 9 9900X3D 128GB DDR5 4TB NVMe 10TB HDD Liquid Cooled Gaming PC

SKU CH-SACX-QWDN4

A 12-core Ryzen 9 9900X3D desktop with 128GB DDR5, 4TB NVMe plus 10TB HDD, and a 240mm liquid cooler

  • Screen sizeNo Screen
  • ProcessorAMD Ryzen 9 9000 Series
  • RAM capacity128 GB DDR5
  • SSD storage4 TB NVMe
  • GraphicsIntegrated Graphics
  • CPU modelAMD Ryzen 9 9900 × 3D
  • 12-core Ryzen 9 9900X3D reaches 5.50 GHz for heavy multitasking
  • 128 GB DDR5 memory handles large datasets and parallel workloads
  • 4 TB NVMe SSD delivers 7450 MB/s reads for instant loading
  • 10 TB HDD adds 256 MB cache bulk storage for archives
  • 240 mm liquid cooler keeps CPU temperatures low under sustained load

Ready-to-run workstation

This system ships as a complete Windows 11 Pro desktop built around a 12-core Ryzen 9 9900X3D processor and 128 GB of DDR5 memory. Integrated Radeon graphics drive the display outputs so the machine is usable the moment it arrives. It targets creators and developers who need high core counts and large memory capacity without adding a discrete graphics card. Buyers who want more storage or a dedicated GPU for heavy 3D rendering should look elsewhere.

Thermals and power

A 240 mm quiet-edition liquid cooler handles the CPU while three 120 mm front fans and a 140 mm PSU fan move air through the Antec P20 mid-tower case. Dust filters on the bottom, front and top help keep internals clean during extended operation. The Thermaltake Smart 850 W 80 PLUS Bronze supply uses Japanese main capacitors and provides over-voltage, under-voltage, over-power and short-circuit protection. Noise stays low in typical workloads thanks to the quiet-edition cooler and ultra-quiet PSU fan.

Build and connectivity

The tempered-glass mid-tower measures 469 x 220 x 490 mm and offers two internal 3.5/2.5 inch bays plus two dedicated 2.5 inch bays. Rear I/O includes two USB4 40 Gbps Type-C ports, three USB 10 Gbps ports, four USB 5 Gbps ports and one USB 2.0 port. Internal headers add a USB 20 Gbps connector, a USB 5 Gbps header and two USB 2.0 headers alongside four M.2 slots and two SATA 6 Gbps connectors. Networking uses Intel 2.5 Gb Ethernet plus Wi-Fi 7 and Bluetooth 5.4 for wireless flexibility.

How it compares

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

Price $4,428.99
Pricier than about 82% 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 4 TB NVMe
Higher than about 70% of the 24,468 comparable items (median 2 TB).

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Specifications

Product
Year of release2026
Product colorBlack
Processor
ProcessorAMD Ryzen 9 9000 Series
CPU modelAMD Ryzen 9 9900 × 3D
CPU socketAM5
Memory
RAM capacity128 GB DDR5
Memory slots4 total
Max supported RAM192 GB
Storage
SSD storage4 TB NVMe
Hard drive10 TB
Optical driveNo
Display
Screen sizeNo Screen
Graphics
GraphicsIntegrated Graphics
Audio & video
Audio chipIntegrated
Sound channels7.1 channels
Connectivity
Wi-Fi standardWi-Fi 7
Network speed2.5 Gbit/s
Ethernet controllerIntegrated
Wi-Fi802.11be Wireless LAN
Bluetooth support5.4
Ports & slots
Ethernet port1 port
Size & build
Form factorMid Tower
Compatibility
Windows 11 supportReady
Software
Operating systemWindows 11 Pro
More details
AI capabilityAI Ready
Cooling methodLiquid Cooling

Questions about this item

How do I install the 240 mm liquid CPU cooler and what step do people often miss?

Mount the radiator to the case top or front using the supplied brackets, then attach the pump block to the AM5 socket with the pre-applied thermal paste; the step most people forget is connecting the pump power cable to the CPU_FAN header so the motherboard can monitor flow.

Which components in this PC are most likely to need replacement after several years of heavy use?

The 140 mm PSU fan and the three 120 mm front case fans are the only moving parts besides the pump; plan to replace those fans when noise or airflow drops, and consider swapping the AIO coolant after about five years.

What thermal or power limit appears first when the Ryzen 9 9900X3D runs sustained all-core workloads?

The 240 mm Quiet Edition AIO is rated for the CPU's 120 W base power; under prolonged all-core loads the coolant temperature rises until the fan curve hits its maximum, at which point the processor will throttle to stay within its thermal envelope.

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