All major textures in the game were increased to 400%+ of their original pixels, sharpened, and had some detail added. Then new normal maps were generated to take advantage of the greater detail, which results in a significant improvement over the original graphics. This enjoys 0% compression files, which helps offset the fact that larger files requires more system resources.
The same story... Sharped textures, but any diffrence with resolution.
This one doesn't even look so bad, but the Nuka-Cola vending machine..