In order for you to play DreadOut on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 14.04
Processor (CPU):
Intel Dual-Core 2.4 GHz or AMD Dual-Core Athlon 2.5 GHz
Memory (RAM):
4 GB RAM
Graphics Card:
NVIDIA GeForce 8800GT or AMD Radeon HD 3830 or Intel HD Graphics 4000, OpenGL 2.1
Storage:
5 GB available space
Sound Card:
OSS Compatible
In order to play DreadOut on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 14.10
Processor (CPU):
Intel Core i5-2300 or AMD Phenom II X4 940 or better
Memory (RAM):
8 GB RAM
Graphics Card:
NVIDIA GeForce GTX 550 or AMD Radeon HD 7750 with 1 GB VRAM or better, OpenGL 3.0
Storage:
10 GB available space
Sound Card:
OSS Compatible