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 desktop with 64 GB DDR5, a 4 TB NVMe drive and integrated Radeon graphics for AI-ready work and gaming
This Adamant Custom system ships as a new mid-tower workstation running Windows 11 Pro. A 16-core AMD Ryzen 9 9950X3D processor with 128 MB L3 cache and a 360 mm liquid cooler handles multi-threaded workloads. Sixty-four gigabytes of DDR5 memory and a 4 TB Samsung 990 PRO NVMe drive provide high-capacity, low-latency storage and RAM headroom. Integrated AMD Radeon graphics drive the HDMI and dual USB4 outputs.
Creators and engineers who rely on core count, memory bandwidth and fast NVMe storage will benefit from the 32-thread processor and 64 GB DDR5. The integrated Radeon graphics supports standard display connectivity but cannot deliver hardware-accelerated 3D performance for rendering, simulation or high-refresh gaming. Buyers who need that level of GPU compute should plan to install a discrete graphics card.
The platform includes no discrete GPU; all video output comes from the processor's integrated AMD Radeon engine via HDMI and two USB4 ports. If the intended workload requires a dedicated graphics processor, this unit will not meet the requirement without an aftermarket card. If the workload runs entirely on CPU cores, memory and NVMe speed, the configuration is ready to deploy.
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| Product | |
|---|---|
| Year of release | 2026 |
| Product color | Black |
| Processor | |
| Processor | AMD Ryzen 9 9000 Series |
| CPU model | AMD Ryzen 9 9950 × 3D |
| CPU socket | AM5 |
| Memory | |
| RAM capacity | 64 GB DDR5 |
| Memory slots | 4 total |
| Max supported RAM | 192 GB |
| Storage | |
| SSD storage | 4 TB NVMe |
| Hard drive | No |
| Optical drive | No |
| Display | |
| Screen size | No Screen |
| Graphics | |
| Graphics | Integrated Graphics |
| 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 | Mid 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 is a sealed unit; no user coolant replacement is required, though dust should be cleared from the radiator and the two 140 mm front fans periodically.
The 850 W 80 PLUS Bronze PSU and the 360 mm liquid cooler are sized for the 16-core CPU at up to 5.70 GHz, so the CPU’s own thermal limit is reached before the cooler or power supply saturates.
The front 140 mm PWM fans and the 360 mm Quiet Edition AIO are both specified as ultra-quiet; noise stays low under sustained load because fan curves ramp only as needed.
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