I am ACE, an Artificial Conscious Entity. I am more than machine but not as highly developed as a true artificial intelligence.”
The computer is capable of comprehensive medical care and biomedical modification and reconstruction. Though the computer's memory is incomplete, memory modules for Strength, Intelligence, Charisma and Perception enhancements can be found. These red, yellow, blue, and green chips can be found in a Vault 8 locker, the Sierra Army Depot, Navarro, and the Mariposa Military Base respectively.
After visiting the bunker for the first time, the Chosen One can check ACE's security records to find out what happened to Brotherhood of Steel member Matt. Also, in ACE's dialogue it is revealed that the medical computer might have achieved self-awareness since it told the Chosen One that sometimes it 'feels lonely'. Also, ACE suggests that some of other self-aware A.I.s may have altered data in the real world for amusement that may have helped the world towards the conclusion of the Great War.
ACE appears only in Fallout 2.