In order for you to play Subnautica on Windows with minimal graphics settings, your computer must meet the following requirements
Requires a 64-bit processor and operating system
OS *:
Windows Vista SP2 or newer, 64-bit
Processor (CPU):
Intel Haswell 2 cores / 4 threads @ 2.5Ghz or equivalent
Memory (RAM):
4 GB RAM
Graphics Card:
Intel HD 4600 or equivalent - This includes most GPUs scoring greater than 950 points in the 3DMark Fire Strike benchmark
DirectX:
Version 11
Storage:
20 GB available space
VR Support:
SteamVR. Keyboard or gamepad required
In order to play Subnautica on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
Requires a 64-bit processor and operating system
OS *:
Windows Vista SP2 or newer, 64-bit
Processor (CPU):
Intel Haswell 4 cores / 4 threads @ 3.2Ghz or equivalent
Memory (RAM):
8 GB RAM
Graphics Card:
Nvidia GTX 550 Ti or equivalent, 2GB VRAM
DirectX:
Version 11
Storage:
20 GB available space