Black level is the OLED advantage; static hours favor LCD
QD-OLED controls light at each pixel
The AW3423DWF uses a quantum-dot OLED panel, so black portions of a dark map can be unlit rather than backlit through an LCD layer. Dell specifies a 1800R curve and 165Hz over DisplayPort. For night raids, dark dungeons, and bright spell effects, that contrast is the reason to choose the Alienware.
RTINGS’ review notes the QD-OLED subpixel layout can leave colored fringing around fine text and that ambient light can affect perceived black levels. Those are review observations, not a claim about every desk or viewing condition. If work documents and small text occupy the screen for much of the day, include them in the decision alongside the game image.
The ASUS is a VA LCD, not an IPS panel
ASUS specifies a VA LCD, 1500R curve, 3440×1440 resolution, and 180Hz maximum refresh over DisplayPort. Over DisplayPort, the ASUS runs 15 Hz higher than the Alienware (180Hz vs 165Hz), and its curve is 1500R vs the Alienware’s 1800R. HDMI is limited to 100Hz on both models.
Because the ASUS is LCD, it does not use OLED pixels that wear at different rates under static content. That can suit a fixed minimap, action bars, raid frames, taskbar, or office windows, including RuneLite layouts in OSRS. It avoids OLED pixel wear, but no specification proves that image retention can never occur.
Care is part of the Alienware choice
Dell documents Pixel Refresh guidance for the AW3423DWF and provides OLED care settings. A static HUD does not automatically make the display unsuitable, but a long daily block of fixed interface and desktop content changes the tradeoff. Keep the monitor’s maintenance prompts enabled and use available game or addon options to hide elements that do not need to stay fixed.
The ASUS trades per-pixel black control for an LCD panel and higher DisplayPort refresh. It also lacks KVM and USB-C, so a work laptop may need its own power adapter and a separate keyboard-and-mouse switch. For a KVM-first ultrawide, see the M32U and LG monitor comparison.