A big difference will be noticed on level art especially. Using high-resolution textures requires a graphics card with at least 1024MB video memory. Most of the benefits from the Hi-resolution textures will only be seen if you are able to run the game in DirectX 11.

To manually download your new content on the PC:

1. Download the installer and run it.
2. Run Dragon Age II.
3. Open the Options menu.
4. Select Video options.
5. Check the "Hi-resolution textures" checkbox.

In order to enable the "Very High" setting you will need a video card that supports DX11 and the latest drivers. Learn more.