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 tower with 64GB DDR5, 8TB NVMe storage and liquid cooling for high-end gaming and media work
This Adamant Custom tower pairs a 24-core Intel Core Ultra 9 285K processor with 64GB of DDR5 memory and an 8TB NVMe array built from two Samsung 990 PRO drives. A GeForce RTX 5070 graphics card and a 360mm liquid cooler complete a system assembled for creators and engineers who need sustained multi-thread throughput. Windows 11 Pro is installed and the platform supports up to 192GB of memory across four slots.
Moving from an 8-core desktop or an air-cooled chassis removes the thermal ceiling that throttles long renders, compiles or simulation jobs. The 360mm liquid loop keeps the 285K at high frequencies while the 850W 80 PLUS Bronze supply delivers stable power for the GPU and storage subsystem. The jump is worth it when single-thread bursts are no longer the bottleneck and sustained all-core performance determines project turnaround.
Under continuous multi-thread load the 360mm quiet-edition cooler maintains lower coolant temperatures than typical air towers, allowing the CPU to hold elevated boost clocks for the duration of a workload. The RTX 5070 12GB and dual PCIe 4.0 NVMe drives feed data without stalling, while the Z890 motherboard provides Wi-Fi 7 and Bluetooth5.4 connectivity for remote monitoring. Thermal headroom stays consistent hour after hour.
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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 | 64 GB DDR5 |
| Memory slots | 4 total |
| Max supported RAM | 192 GB |
| Storage | |
| SSD storage | 8 TB NVMe |
| Hard drive | No |
| Optical drive | No |
| Display | |
| Screen size | No Screen |
| Graphics | |
| Graphics | GeForce RTX 5070 |
| 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 AIO fits the tower case with 447 mm depth, 215 mm width and 469 mm height; it mounts to the standard 140 mm fan locations on the front or top panel.
Insert the 24-pin ATX cable and the 8-pin EPS connector into the LGA 1851 socket area; the 850 W Thermaltake unit supplies both.
The Z890M AORUS provides three M.2 connectors; two are occupied by the factory SSDs, leaving one open for future NVMe expansion.
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