Key Specifications at a Glance

• Screen Size: 31.5 inches

• Panel Type: OLED

• Resolution: 4K UHD (3840 x 2160)

• Refresh Rate: 240Hz

• Response Time: 0.03ms (GtG)

• HDR: DisplayHDR True Black 400

• Key Features: NVIDIA G-SYNC Compatible, AMD FreeSync Premium Pro, Custom Heatsink, ROG Smart KVM
  

The "Killer Combo": 4K + OLED + 240Hz

• 4K Resolution: At 31.5 inches, the pixel density is superb, resulting in incredibly sharp and detailed images. It's perfect for immersive single-player games and provides a clear desktop experience for productivity.

• OLED Panel: This is the heart of the experience. OLED technology offers perfect per-pixel lighting, meaning infinite contrast ratios, true blacks, and no blooming or haloing. Colors are vibrant and incredibly accurate.

• 240Hz Refresh Rate: This ensures buttery-smooth motion clarity, which is crucial for competitive gaming. The combination of 4K and 240Hz is the current pinnacle for high-performance gaming.

Picture Quality & HDR Performance

• Infinite Contrast & Perfect Blacks: As an OLED, pixels turn off completely to display black. This creates a level of depth and realism that LCD-based monitors (even high-end Mini-LEDs) cannot match.

• DisplayHDR True Black 400: This is the specific HDR certification for OLEDs. While the peak brightness number (around 1000 nits for small highlights) may seem lower than some Mini-LED monitors, the perceived contrast and HDR impact are often superior because the blacks are truly black. Highlights in dark scenes, like explosions or headlights, pop with incredible intensity.

• Color Gamut: It covers 99% of the DCI-P3 color space, making it excellent for content consumption, photo editing, and video work.

Gaming Performance

• 0.03ms Response Time: This is effectively instantaneous. There is virtually no ghosting or smearing in fast-paced games. The motion clarity is unmatched by any IPS or VA panel.

• 240Hz Refresh Rate: Paired with the near-instant response time, fast-paced action in shooters, racing games, and MOBAs looks incredibly fluid and sharp.

• G-SYNC & FreeSync: It's certified as G-SYNC Compatible and supports AMD FreeSync Premium Pro, ensuring a smooth, tear-free gaming experience whether you use an NVIDIA or AMD graphics card.

Design & Features

• Custom Heatsink: To manage heat and prevent potential OLED burn-in, ASUS uses a custom-designed internal heatsink. This allows for higher sustained brightness and is a key part of their durability engineering.

• Burn-in Mitigation: Includes standard OLED protection features like pixel shifting, a pixel refresher, and a screensaver.

• ROG Smart KVM: A highly useful feature for users with multiple devices (e.g., a gaming PC and a work laptop). You can control both with a single keyboard and mouse, and the monitor will automatically switch the KVM when it detects which input is active.

• Connectivity: Includes two HDMI 2.1 ports (enabling 4K 120Hz on consoles like the PS5), a DisplayPort 1.4, a USB-C port with 90W Power Delivery, and a USB hub.