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Black mid-tower PC with tempered glass side panel and liquid cooling visible inside

Adamant Custom

Adamant Custom 12-Core Liquid Cooled Gaming Desktop PC Ryzen 9 9900X3D 32GB DDR5 8TB NVMe RTX 5090

SKU CH-GGD4-8EHH0

Liquid-cooled tower with a 12-core Ryzen 9 9900X3D, 32 GB DDR5, 8 TB NVMe storage and an RTX 5090 GPU for high-end gaming and workstation tasks

  • Release Year2026
  • TypeBusiness Desktops & Workstations
  • Form FactorTower
  • AI FeaturesAI Ready
  • UsageWorkstation
  • ColorBlack
  • 12-core Ryzen 9 9900X3D powers heavy workloads and gaming
  • 240 mm liquid cooler keeps the CPU quiet under load
  • 32 GB DDR5 memory handles multitasking with headroom to 192 GB
  • 8 TB NVMe storage from dual Samsung 990 PRO drives
  • RTX 5090 32 GB GPU delivers high-end graphics performance

Built for Workstation and Gaming Demands

This desktop combines a 12-core AMD Ryzen 9 9900X3D processor with an Nvidia GeForce RTX 5090 graphics card. It includes 32GB of DDR5 memory and an 8TB NVMe SSD array. The system ships with Windows 11 Pro installed in a liquid-cooled tower chassis.

Moving From Air Cooling or Smaller Storage

The 240mm liquid cooler handles sustained workloads better than standard air coolers on high-core-count CPUs. Dual 4TB NVMe drives replace smaller single-drive setups, removing the need to juggle projects across volumes. The jump is worth it when render queues or texture streaming exceed air-cooled thermal limits or 2TB capacity.

PCIe 4.0 and 1200W Define the Ceiling

The motherboard and SSD array operate at PCIe 4.0 speeds, so sequential transfers peak at the drive ratings of 7450 MB/s read and 6900 MB/s write. The 1200W 80 PLUS Gold power supply sets the total system power envelope. Memory expansion stops at 192GB across four slots.

Highlights

  • 12-core Ryzen 9 9900X3D powers heavy workloads and gaming
  • 240 mm liquid cooler keeps the CPU quiet under load
  • 32 GB DDR5 memory handles multitasking with headroom to 192 GB
  • 8 TB NVMe storage from dual Samsung 990 PRO drives
  • RTX 5090 32 GB GPU delivers high-end graphics performance

Specifications

Release Year2026
TypeBusiness Desktops & Workstations
Form FactorTower
AI FeaturesAI Ready
UsageWorkstation
ColorBlack
Cooling SystemLiquid Cooling
Operating SystemWindows 11 Pro
Windows 11Ready
CPU TypeAMD Ryzen 9 9000 Series
CPU NameAMD Ryzen 9 9900X3D
CPU Socket TypeAM5
GPU/VGA TypeGeForce RTX 5090
Graphics InterfacePCI Express x16
Memory Capacity32GB 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
WLAN802.11be Wireless LAN
WiFi GenerationWi-Fi 7
BluetoothBluetooth 5.4
RJ451 port

Questions about this item

What clearance does the Antec P20 case need for the 240 mm liquid cooler radiator?

The 240 mm radiator mounts in the front of the Antec P20 case, which measures 469 mm deep by 220 mm wide by 490 mm high, so ensure your desk space accommodates those dimensions.

Which motherboard power connectors must be seated for the Ryzen 9 9900X3D on the PRIME X870-P board?

Connect the 24-pin ATX cable and the 8-pin EPS CPU cable from the Thermaltake Toughpower 1200W PSU; the EPS connector is often missed during first builds.

How many M.2 slots remain free for future SSD upgrades after the two 4 TB Samsung 990 PRO drives are installed?

The PRIME X870-P provides four M.2 connectors; two are occupied by the factory 4 TB drives, leaving two open slots for additional NVMe storage.

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