In order for you to play Dragon Age II on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows Vista with SP3, SP2 or windows 7
Processor (CPU):
Intel Core 2 Duo (or equivalent) running at 1.8 GHz or greater; AMD Athlon 64 X2 (or equivalent) running at 1.8 GHz or greater
Memory (RAM):
1 GB RAM
Graphics Card:
ATI Radeon HD 2600 Pro 256 MB; NVIDIA GeForce 7900 GS 256 MB cards
DirectX:
Version 9.0c
Storage:
7 GB available space
Sound Card:
Direct X 9.0c Compatible Sound Card Windows Experience Index: 4.5
In order to play Dragon Age II on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows Vista with SP3, SP2 or windows 7
Processor (CPU):
Intel Core 2 Quad 2.4 GHz Processor or equivalent; AMD Phenom II X3 Triple core 2.8 GHz or equivalent
Memory (RAM):
2 GB RAM
Graphics Card:
ATI 3850 512 MB or greater; NVIDIA 8800 GTS 512 MB or greater
DirectX:
Version 11
Storage:
7 GB available space