In order for you to play Day of Infamy on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 12.04
Processor (CPU):
Dual core from Intel® or AMD at 2.8 GHz
Memory (RAM):
4 GB RAM
Graphics Card:
NVIDIA GeForce 8600/9600GT, ATI/AMD Radeon HD2600/3600 (Graphic Drivers: nVidia 310, AMD 12.11), OpenGL 2.1
Network:
Broadband Internet connection
Storage:
12 GB available space
Sound Card:
OpenAL Compatible Sound Card
In order to play Day of Infamy on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Processor (CPU):
4+ cores
Memory (RAM):
8 GB RAM
Graphics Card:
1536MB VRAM or more
Network:
Broadband Internet connection
Storage:
15 GB available space