The Realme 8 and Realme 8 Pro smartphones have been included on an unofficial list of devices that support the company's dynamic RAM expansion (DRE) technology. The amount of virtual RAM that can be added depends on the phone, with the upper limit hitting an extra 7 GB. The update for the Realme 8 has already started rolling out.
https://www.notebookcheck.net/Realme-8-and-8-Pro-join-the-dynamic-RAM-expansion-device-list-along-with-31-other-Realme-smartphones.556893.0.html