Category Specification Brand MSI Model MPG 321URXW QD‑OLED Display Size 31.5″ (80 cm) Panel Type Quantum Dot OLED (QD‑OLED) Resolution 3840 × 2160 (4K UHD) Aspect Ratio 16:9 Refresh Rate 240 Hz Response Time 0.03 ms (GtG) Dynamic Refresh Range 48 – 240 Hz (FreeSync Premium Pro) HDR Support VESA DisplayHDR True Black 400 Peak Brightness Up to ~1000 nits (small highlights) SDR Brightness ~250 nits typical Contrast Ratio ~1,500,000:1 Color Depth 10‑bit (1.07 billion colors) Color Gamut (DCI‑P3) ~110 % Panel Surface Anti‑reflection Connectivity 1 × DisplayPort 1.4a, 2 × HDMI 2.1 (UHD@240 Hz), 1 × USB‑C (DP Alt + 90 W PD) USB Hub Yes (USB 2.0 ports) Audio Headphone‑out Adaptive Sync AMD FreeSync Premium Pro / NVIDIA G‑SYNC Compatible Stand Adjustments Tilt / Height / Swivel VESA Mount 100 × 100 mm Special Features OLED Care 2.0 panel protection Color / Finish White chassis Dimensions (W × H × D) Typical mid‑large monitor footprint Weight ~9.6 kg (with stand)