MSI MAG 321CUP QD-OLED 31.5" 4K HDR 165 Hz Curved Gaming Monitor

The MSI MAG 321CUP QD-OLED is a gaming monitor built around a 31.5-inch Quantum Dot OLED panel that delivers a native 3840 x 2160 resolution. The screen follows a 1700R curve, placing the edges of the image at a consistent distance from your eyes and creating a sense of wrap-around immersion whether you are racing through open worlds or editing video timelines.

Fast action looks crisp because the panel refreshes at 165 Hz and reaches a 0.03 ms response time. When paired with a compatible NVIDIA graphics card, G-Sync support helps each frame arrive in perfect sync, which reduces tearing and stuttering during competitive shooters, battle royales, or any title where every millisecond matters.

Color accuracy and contrast are strengths of the Quantum Dot OLED technology. Factory calibration keeps Delta E at 2 or lower, so shades appear exactly as the content creator intended. Coverage of 99 percent of the DCI-P3 gamut makes the monitor a capable tool for HDR grading, graphic design, and photo work. VESA DisplayHDR True Black 400 certification, a 1,500,000:1 contrast ratio, and peaks of up to 1000 nits allow bright highlights and inky blacks to share the screen without compromise.

Two HDMI 2.1 inputs welcome modern consoles at full 4K 120 Hz, while DisplayPort 1.4 taps the monitor’s complete 165 Hz potential on a capable PC. A USB-C port carries video, data, and 15 W of power delivery, which is practical for a laptop or tablet that needs a quick top-up. The stand lets you adjust height, tilt, and swivel to find a comfortable posture during long sessions, and MSI’s OLED Care 2.0 routines help minimize the risk of image retention over the life of the display.

• 31.5-inch QD-OLED panel that presents 4K resolution with a 1700R curve
• 165 Hz refresh and 0.03 ms response for sharp motion in fast-paced games
• NVIDIA G-Sync compatibility keeps frames synchronized to the GPU
• VESA DisplayHDR True Black 400 certification with 1,500,000:1 contrast and up to 1000 nits peak brightness
• Factory calibration to Delta E = 2 and 99 percent DCI-P3 gamut coverage
• Two HDMI 2.1 ports, one DisplayPort 1.4, and USB-C with 15 W power delivery
• Stand supports height, tilt, and swivel adjustment for ergonomic setups
• Included OLED Care 2.0 features that work to prevent burn-in over time