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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Liquid-cooled tower with a 12-core Ryzen 9 9900X3D, 32GB DDR5, 8TB NVMe plus 10TB HDD, and an RTX 5060 for AI-ready gaming and workstation tasks
The Adamant Custom desktop pairs a 12-core AMD Ryzen 9 9900X3D processor with 32GB of DDR5 memory and an Nvidia GeForce RTX 5060 graphics card. A 240mm liquid cooler manages CPU thermals inside a CoolerMaster HAF 500 tower case. Windows 11 Pro is installed and the system is described as AI ready for workstation and gaming workloads.
Two 4TB Samsung 990 PRO drives deliver 8TB of NVMe capacity with sequential reads up to 7450 MB/sec and writes up to 6900 MB/sec, while a 10TB hard drive with 256MB cache adds bulk storage. The TUF X870-PLUS motherboard provides four M.2 connectors, two SATA 6Gb/s ports, and multiple internal 3.5-inch and 2.5-inch bays for further expansion. Front-panel I/O includes USB 3.2 Gen 1, USB 3.2 Gen 2 Type-C, and audio connections.
The AM5 socket supports up to 192 GB of DDR5 across four slots, and the PCI Express x16 slot carries the RTX 5060. Rear I/O offers two USB4 ports at 40Gbps, three USB 10Gbps ports, four USB 5Gbps ports, and one USB 2.0 port alongside Intel 2.5Gb Ethernet and Wi-Fi 7 2x2 wireless. The Thermaltake Smart 850W 80 PLUS Bronze power supply includes over-voltage, under-voltage, over-power, and short-circuit protection.
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| Product | |
|---|---|
| Year of release | 2026 |
| Product type | Business Desktops & Workstations |
| Recommended use | Workstation |
| Product color | Black |
| Processor | |
| Processor | AMD Ryzen 9 9000 Series |
| CPU model | AMD Ryzen 9 9900 × 3D |
| CPU socket | AM5 |
| Memory | |
| RAM capacity | 32 GB DDR5 |
| Memory slots | 4 total |
| Max supported RAM | 192 GB |
| Storage | |
| SSD storage | 8 TB NVMe |
| Hard drive | 10 TB |
| Optical drive | No |
| Display | |
| Screen size | No Screen |
| Graphics | |
| Graphics | GeForce RTX 5060 |
| GPU interface | PCI Express x16 |
| 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 240 mm AIO is a sealed unit with no user-serviceable parts, so no coolant refills are required; if the pump ever fails the entire cooler would be replaced.
The 12-core CPU will reach its thermal ceiling before the 850 W Bronze PSU or the RTX 5060 8 GB GPU become bottlenecks.
The front 200 mm ARGB fans and rear 120 mm fan move large volumes of air at low RPM, keeping noise low while the 240 mm liquid cooler handles CPU heat.
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