DELL OptiPlex All-in-One 7420 7DX9X Core i5-14500 16GB 256GB 23.8" all-in-one PC
- All-in-One PC
- All-in-One
Adamant Custom
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
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.
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.
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.
| Release Year | 2026 |
|---|---|
| Type | Business Desktops & Workstations |
| Form Factor | Tower |
| AI Features | AI Ready |
| Usage | Workstation |
| Color | Black |
| Cooling System | Liquid Cooling |
| Operating System | Windows 11 Pro |
| Windows 11 | Ready |
| CPU Type | AMD Ryzen 9 9000 Series |
| CPU Name | AMD Ryzen 9 9900X3D |
| CPU Socket Type | AM5 |
| GPU/VGA Type | GeForce RTX 5090 |
| Graphics Interface | PCI Express x16 |
| Memory Capacity | 32GB DDR5 |
| Memory Slots (Available/Total) | 4 total |
| Maximum Memory Supported | 192 GB |
| SSD | 8TB NVMe |
| HDD | No |
| Optical Drive Type | No |
| Screen Size | No Screen |
| Audio Chipset | Integrated |
| Audio Channels | 7.1 channels |
| LAN Chipset | Integrated |
| LAN Speed | 2.5Gbps |
| WLAN | 802.11be Wireless LAN |
| WiFi Generation | Wi-Fi 7 |
| Bluetooth | Bluetooth 5.4 |
| RJ45 | 1 port |
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.
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.
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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