Assume that the future can change based on your actions, so any historical information that you bring along with you from the intervening 25 years may quickly drift out of the new realities history.
Edit: also assume that you can be given a healthy 21-year-old body if you want or take your previous self’s place.
Further, identification will be provided for you if you were not born at that time.
Honestly, I don’t know for sure since I’m not an expert; my reasoning was the hope that being able to examine the entire line of advancement would allow the necessary technical knowledge to be extracted and duplicated. I knew that just bringing the latest one would definitely do nothing.
If looking at a 5nm chip was all that was needed to make a copy, China would already be selling RTX 4090 clones.