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 24-core Intel Core Ultra 9 285K desktop with an Nvidia RTX PRO 4000 Blackwell GPU, 64GB DDR5, 2TB NVMe SSD and 10TB HDD for CAD, modelling and AI workloads
This desktop PC ships as a workstation configured for SolidWorks CAD CAM CAE modelling. It runs Windows 11 Pro on a 24-core Intel Core Ultra 9 285K processor and an Nvidia RTX PRO 4000 Blackwell GPU with 24GB of video memory. Liquid cooling and a 360mm radiator keep the CPU at stable temperatures during long render jobs.
Engineers and designers who rely on ISV-certified drivers for modelling applications will benefit from the RTX PRO 4000 Blackwell and 64GB of DDR5 memory. Buyers who only game or who need more than 192GB of system memory should look at a different configuration. The single GPU layout also limits multi-card compute workflows.
The system draws power from an 850W 80 PLUS Bronze supply with a 140mm fan; confirm your circuit can sustain that load. The Antec P10 FLUX case measures 477mm deep by 220mm wide by 486mm high — check desk or rack clearance. The Gigabyte Z890 UD motherboard offers four DDR5 slots with a 192GB maximum and four M.2 connectors, so plan any future storage or memory upgrades around those limits.
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| Product | |
|---|---|
| Product type | Desktop PC |
| Year of release | 2026 |
| Recommended use | Workstation |
| 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 | 64 GB DDR5 |
| Memory slots | 4 total |
| Max supported RAM | 192 GB |
| Storage | |
| SSD storage | 2 TB NVMe |
| Hard drive | 10 TB |
| Drive interface | SATA |
| Optical drive | No |
| Display | |
| Screen size | No Screen |
| Graphics | |
| Graphics | Nvidia RTX PRO 4000 Blackwell |
| GPU interface | PCI Express x16 |
| VR ready | Yes |
| 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 | Desktop |
| Compatibility | |
| Windows 11 support | Ready |
| Software | |
| Operating system | Windows 11 Pro |
| More details | |
| AI capability | AI Ready |
| Cooling method | Liquid Cooling |
The board provides four M.2 slots; the 990 PRO installs directly under the included motherboard heatsink so no extra cooler is needed.
Yes, the board has four SATA 6Gb/s ports that accept any standard SATA drive, so older drives plug in without adapters.
Open GPU-Z or Task Manager and verify the link width reads x16; the card uses the primary PCI Express x16 slot wired directly to the CPU.
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