- CPU: 8x Zen 2 Cores at 3.8GHz (3.6GHz with SMT) 7nm
- GPU: 12 TFLOPs, 52 CUs at 1.825GHz, Custom RDNA 2
- Memory: 16GB GDDR6
- Storage: 1TB custom NVMe SSD
- Optical drive: 4K UHD Blu-ray
- Ports: HDMI 2.1 output, 3x USB 3.2, networking port, expanded storage slot, power input
- 120 fps support
- Potential 8K resolutions
- Ray-tracing technology
- Variable Rate Shading for more stable frame rates
- Compatible with Xbox One accessories
- Smart Delivery
And here's a lengthy article if you feel like reading it: https://www.eurogamer.net/articles/digitalfoundry-2020-inside-xbox-series-x-full-specs