In order for you to play Dungeon Siege III on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP SP3, Vista SP1, Windows 7
Processor (CPU):
Core 2 Duo 2.5 GHz or equivalent
Memory (RAM):
1.5 GB
Graphics Card:
ATI Radeon HD 3870 or NVIDIA 9800 GT
DirectX®:
DirectX® 9.0c
Hard Drive:
4 GB for full installation
Sound:
No accelerated sound hardware required
In order to play Dungeon Siege III on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows 7
Processor (CPU):
Core i5 750 2.67 GHz or equivalent
Memory (RAM):
2 GB
Graphics Card:
ATI Radeon HD 4870 or NVIDIA GTX 260