Cycu1 channel on YouTube published a video comparing footage from the demo of Final Fantasy 7: Rebirth with the original version of Final Fantasy 7, which was released in 1997.
The video shows the huge difference in the graphical aspect that the remake presented. Note that the remake is a remake divided into 3 parts, the first of which was released in 2020, the second of which is Rebirth, and the last part will be released in the future.