Comparing against the AW3926QW, their AW3425DW QD-OLED has noticeably more color pop and depth and better viewing angles.
“I tried the Tandem OLED Alienware AW3926QW and compared it with my QD-OLED AW3425DW, and the difference is absolutely noticeable. The colors on QD-OLED have more pop and depth.”