Skytech ST-LEGACY4-1686-B-AL gaming PC Ryzen 9 9900X3D RTX 5090 32GB 64GB DDR5 4TB NVMe
- Ryzen 9 9000
- Ryzen 9 9900 × 3D
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High-performance tower with a 24-core Intel Core Ultra 9 285K, 128GB DDR5, 1TB NVMe SSD, 10TB HDD and an RTX 5080 16GB GPU for gaming and AI workloads
This desktop pairs a 24-core Intel Core Ultra 9 285K with 128GB of DDR5 memory and an Nvidia GeForce RTX 5080 16GB graphics card. It targets professionals who need sustained multi-threaded performance for rendering, modelling and machine-learning tasks. The system ships with Windows 11 Pro installed and includes a 1TB NVMe boot drive plus a 10TB hard drive for bulk storage.
The unit arrives fully built inside a Corsair 4000D chassis, so no component installation is required. Routine upgrades such as adding memory or drives are straightforward thanks to four total DIMM slots and multiple internal bays. Liquid cooling tubing and the 360mm radiator occupy the top mount, which can limit access to the upper motherboard headers during later maintenance.
The 128GB kit leaves headroom up to the 192GB motherboard limit for future expansion. The 1TB Samsung 990 PRO NVMe drive delivers up to 7450 MB/s reads for active project files, while the 10TB hard drive provides deep capacity for archives. Workloads that exceed 128GB of RAM or demand multiple high-end GPUs will outgrow this configuration.
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| Product | |
|---|---|
| Year of release | 2026 |
| Product color | Black |
| Processor | |
| Processor | Intel Core Ultra 9 (Series 2) |
| CPU model | Intel Core Ultra 9 285K |
| CPU socket | LGA 1851 |
| Memory | |
| RAM capacity | 128 GB DDR5 |
| Memory slots | 4 total |
| Max supported RAM | 192 GB |
| Storage | |
| SSD storage | 1 TB NVMe |
| Hard drive | 10 TB |
| Optical drive | No |
| Display | |
| Screen size | No Screen |
| Graphics | |
| Graphics | GeForce RTX 5080 |
| Audio & video | |
| Audio chip | Integrated |
| Sound channels | 7.1 channels |
| Connectivity | |
| Wi-Fi standard | Wi-Fi 6E |
| Network speed | 2.5 Gbit/s |
| Ethernet controller | Integrated |
| Wi-Fi | 802.11ax Wireless LAN |
| Bluetooth support | 5.4 |
| Ports & slots | |
| Ethernet port | 1 port |
| Size & build | |
| Form factor | Tower |
| Compatibility | |
| Windows 11 support | Ready |
| Software | |
| Operating system | Windows 11 Pro |
| More details | |
| AI capability | AI Ready |
| Cooling method | Liquid Cooling |
Open Task Manager's Performance tab or a monitoring tool such as HWInfo and watch the CPU frequency under load; it should reach 5.70 GHz on active cores when thermals allow.
The system ships with the Z890 UD motherboard, 128 GB DDR5, 1 TB Samsung 990 PRO SSD, 10 TB HDD, RTX 5080 16 GB, 360 mm AIO cooler, 1000 W Gold PSU and Windows 11 Pro; only peripherals and extra drives are optional.
The board has four slots and 128 GB is already installed; adding two more matching DDR5 modules will bring you to the 192 GB limit without replacing the existing kit.
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