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
A liquid-cooled gaming desktop with a 24-core Intel Core Ultra 9 285K, 128 GB DDR5 memory and a 2 TB NVMe SSD
This desktop workstation ships with a 24-core Intel Core Ultra 9 285K processor and 128 GB of DDR5 memory. A 360 mm liquid cooler keeps the CPU stable under sustained multi-threaded loads. Integrated graphics provide display output through USB4 and DisplayPort connections. The system targets professionals who need high core counts and large memory capacity without a discrete GPU.
The jump to twenty-four cores and 128 GB DDR5 is worth it when render queues, virtual machines or large datasets exceed the memory or thread budget of previous machines. A 2 TB Samsung 990 PRO NVMe drive delivers sequential reads up to 7450 MB/s and writes up to 6900 MB/s. Four M.2 slots and four SATA ports remain available for additional storage expansion.
The motherboard rear I/O includes one USB4 Type-C, two USB 3.2 Gen 2, three USB 3.2 Gen 1 and four USB 2.0 ports. Front panel adds one USB 3.2 Gen 2x2 Type-C, two USB 3.0 and audio jacks. Networking uses Intel 2.5 Gb Ethernet plus Wi-Fi 7 and Bluetooth 5.4. The 850 W 80 PLUS Bronze power supply supports the configured components; check any planned add-in cards against the remaining capacity.
| Release Year | 2026 |
|---|---|
| Form Factor | Desktop |
| AI Features | AI Ready |
| Color | Black |
| Cooling System | Liquid Cooling |
| Operating System | Windows 11 Pro |
| Windows 11 | Ready |
| CPU Type | Intel Core Ultra 9 (Series 2) |
| CPU Name | Intel Core Ultra 9 285K |
| CPU Socket Type | LGA 1851 |
| GPU/VGA Type | Integrated Graphics |
| Memory Capacity | 128GB DDR5 |
| Memory Slots (Available/Total) | 4 total |
| Maximum Memory Supported | 192 GB |
| SSD | 2TB 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 case measures 447 mm deep, 215 mm wide and 469 mm high; the 360 mm AIO radiator mounts inside, so allow at least that depth plus cable clearance.
Populate all four DDR5 slots with the matched 128 GB kit; the board runs quad-channel, so use the same bank order shown in the manual to avoid a no-post boot.
Check the AIO for pump noise or coolant loss every 12–24 months; the Thermaltake Smart 850 W unit’s 140 mm fan should be dusted annually and the PSU replaced if voltages drift.
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