Acer has updated its Predator X27U gaming monitor series with a new 'X1' option. Seemingly replacing the existing Predator X27U, the Predator X27U X1 features an updated design with one of Samsung Display's recent high-resolution and fast QD-OLED panels.https://www.notebookcheck.net/Acer-Predator-X27U-OLED-gaming-monitor-refreshed-with-new-X1-release.953621.0.html
Standard X27U has WOLED panel, not QD-OLED as stated in this text.