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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A 16-core liquid-cooled tower with 128GB DDR5, 1TB NVMe plus 10TB HDD, and a 24GB RTX PRO 4000 Blackwell GPU for professional 3D work and gaming
The system is built around a sixteen-core AMD Ryzen 9 9950X processor with a 4.3 GHz base frequency and up to 5.70 GHz boost. It targets engineers and designers who run SolidWorks, CAM and CAE workloads that scale across thirty-two threads. The X870 TUF motherboard and 360 mm liquid cooler keep sustained clocks stable during long simulation runs.
The Nvidia RTX PRO 4000 Blackwell with 24 GB VRAM replaces consumer graphics cards that lack certified drivers for professional 3D applications. Moving from thirty-two or sixty-four gigabytes of system memory to 128 GB DDR5 removes the bottleneck when loading large assemblies or point-cloud data. The jump is worth it when viewport lag or out-of-memory errors stall daily work.
A 1 TB PCIe 4.0 NVMe drive delivers up to 7450 MB/s read and 6900 MB/s write for active projects, while a 10 TB hard drive with 256 MB cache provides bulk capacity. The board offers two USB4 ports at 40 Gbps, three USB 10 Gbps ports and Intel 2.5 Gb Ethernet alongside Wi-Fi 7. Four M.2 slots and two 3.5-inch bays set the physical expansion ceiling.
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| Product | |
|---|---|
| Year of release | 2026 |
| Product color | Black |
| Processor | |
| Processor | AMD Ryzen 9 9000 Series |
| CPU model | AMD Ryzen 9 9950X |
| CPU socket | AM5 |
| 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 | Nvidia RTX PRO 4000 Blackwell |
| VR ready | Yes |
| Audio & video | |
| Audio chip | Integrated |
| Sound channels | 7.1 channels |
| Connectivity | |
| Wi-Fi standard | Wi-Fi 7 |
| Network speed | 2.5 Gbit/s |
| Ethernet controller | Integrated |
| Wi-Fi | 802.11be 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 |
The 360 mm quiet-edition AIO cooler is pre-installed, so the case already accommodates a 360 mm radiator in its factory mounting position.
Mount the CPU block with tubes exiting toward the rear I/O area; this avoids kinking the lines against the X870 motherboard heatsinks.
The sealed AIO is maintenance-free for its service life; no coolant top-ups or changes are required under normal operation.
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