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 gaming desktop with a 24-core Intel Core Ultra 9 285K, 32GB DDR5, 4TB NVMe plus 10TB HDD, and an RTX 5090 GPU
This desktop ships fully assembled with a 24-core Intel Core Ultra 9 285K processor, 32GB of DDR5 memory and an Nvidia GeForce RTX 5090 graphics card. A 4TB NVMe SSD and a 10TB hard drive provide fast boot and deep archival storage. Windows 11 Pro is pre-installed so the machine is ready for heavy rendering, simulation or high-refresh gaming straight away.
The mid-tower case measures 475 by 245 by 463 millimetres and weighs enough to need two people to lift safely. A 360 mm all-in-one liquid cooler is already mounted, leaving only the side panel and power cable to connect. Front-panel USB 3.2 Type-C and audio ports are wired; internal drive bays accept one 3.5-inch or two 2.5-inch devices if extra storage is added later.
The 32GB frame buffer on the RTX 5090 handles large 3D scenes, video timelines and machine-learning batches without swapping. Buyers who only need 1080p gaming or light office work will find the specification excessive. Anyone requiring ECC memory, dual-socket scaling or a rack-mount form factor should look at a server-class platform instead.
| CPU Type | Intel Core Ultra 9 (Series 2) |
|---|---|
| CPU Name | Intel Core Ultra 9 285K |
| CPU Socket Type | LGA 1851 |
| GPU/VGA Type | GeForce RTX 5090 |
| Memory Capacity | 32GB DDR5 |
| Memory Slots (Available/Total) | 4 total |
| Maximum Memory Supported | 192 GB |
| SSD | 4TB NVMe |
| HDD | 10TB |
| Operating System | Windows 11 Pro |
| Form Factor | Mid Tower |
| Release Year | 2026 |
| AI Features | AI Ready |
| Color | Black |
| Cooling System | Liquid Cooling |
| Windows 11 | Ready |
| LAN Speed | 2.5Gbps |
| WiFi Generation | Wi-Fi 7 |
| LAN Chipset | Integrated |
| WLAN | 802.11be Wireless LAN |
| Bluetooth | Bluetooth 5.4 |
| Optical Drive Type | No |
| Screen Size | No Screen |
| Audio Chipset | Integrated |
| Audio Channels | 7.1 channels |
| RJ45 | 1 port |
Boot into Windows 11 Pro, open Task Manager and confirm the CPU shows 24 cores with a base speed of 3.7 GHz and the GPU is listed as an RTX 5090 with 32 GB of video memory.
The system ships fully assembled with the Z890 motherboard, 24-core CPU, 360 mm liquid cooler, 32 GB DDR5, 4 TB Samsung 990 PRO SSD, 10 TB HDD, RTX 5090, 1200 W Gold PSU and Windows 11 Pro; only a monitor, keyboard and mouse are needed.
The board has four DDR5 slots supporting up to 192 GB total, so the installed 32 GB kit leaves three slots free for adding more DDR5 modules later.
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