In order for you to play Pillars of Eternity - Hero Edition on Linux with minimal graphics settings, your computer must meet the following requirements
Operating System:
Ubuntu 14.04 LTS 64-bit or newer
Processor (CPU):
Intel Core i3-2100T @ 2.50 GHz / AMD Phenom II X3 B73
Memory (RAM):
4 GB RAM
Graphics Card:
ATI Radeon HD 4850 or NVIDIA GeForce 9600 GT
Storage:
14 GB available space
In order to play Pillars of Eternity - Hero Edition on Linux with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Ubuntu 14.04 LTS 64-bit or newer
Processor (CPU):
Intel Core i5-2400 @ 3.10 GHz / AMD Phenom II X6 1100T
Memory (RAM):
8 GB RAM
Graphics Card:
Radeon HD 7700 or NVIDIA GeForce GTX 570
Storage:
14 GB available space