In order for you to play Antichamber on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP SP2, Vista, or Windows 7
Processor (CPU):
2.0+ GHz or better (dual core recommended)
Memory (RAM):
2 GB RAM
Graphics Card:
NVIDIA 8000 series or higher (Shader Model 3 Compatible)
DirectX®:
9.0c
Hard Drive:
1 GB HD space