whatspec
CPUAMD Zen 4
Cores/Threads6 / 12
RAM16 GB
GPUSemi-custom AMD RDNA 3
Compute Units28
VRAM8 GB
Storage512 GB, 2 TB
WirelessWi-Fi 6E 2x2, Bluetooth
Display OutputsDisplayPort 1.4, HDMI 2.0
Front I/O2× USB 3.0 Type-A (front), microSD card slot
Rear I/O2× USB 2.0 Type-A, USB 3.2 Gen 2 Type-C (10 Gbps), Ethernet (1 Gbps)
https://www.pcgamer.com/hardware/gaming-pcs/steam-machine-specs-availability/

I think this spec is relatively low. That might be a good thing to force better optimizations from game developers.