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MSI MPG 321URX QD-OLED

31.5-inch · 3840 × 2160 · 240 Hz · exact MSI global configuration

31.5-inch QD-OLED monitor with 3840 × 2160 native resolution and a manufacturer-listed 240 Hz maximum. Up to 240 Hz at 3840 × 2160 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode. Check required source, cable and mode support.

Reviewed 7 Sept 2026Manufacturer specifications, not a hands-on test.

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WHAT IT BRINGS

The useful part.

The 31.5-inch UHD configuration combines a listed 240 Hz mode with up to 90 W USB-C charging.

Manufacturer source

BEFORE YOU CHOOSE

The checks that matter.

This 321URX lists DisplayPort 1.4a and a USB 2.0 hub; the 322URX’s UHBR20 and USB 5Gbps specifications do not transfer.

Manufacturer source

NOTHING HIDDEN IN THE SMALL PRINT

Every specification.
With its source.

Our publishing standard

Screen diagonal: 31.5 in
Conditions & context
Manufacturer specification · Manufacturer active screen diagonal. Aspect ratio and actual width differ; diagonals across 16:9 and 32:9 displays do not imply equal usable areas.
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Native resolution: 3840 × 2160
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Refresh rate: 240 Hz
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Manufacturer specification · Up to 240 Hz at 3840 × 2160 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode. Check required source, cable and mode support.
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Panel technology: QD-OLED
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Inputs and versions: 1 × DisplayPort 1.4a; 2 × HDMI 2.1; 1 × USB-C with DisplayPort Alt Mode and up to 90 W Power Delivery; headphone output
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Manufacturer specification · Up to 240 Hz at 3840 × 2160 through DisplayPort, HDMI or USB-C DisplayPort Alt Mode. Check required source, cable and mode support.
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Dimensions with stand: 718 × 242 × 483 mm (width × depth × height, with stand)
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Manufacturer specification · Manufacturer assembled dimensions with stand, ordered width × depth × height. Stand depth excludes additional cable clearance; this is not panel thickness.
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Stand depth: 242 mm
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Manufacturer specification · Manufacturer assembled dimensions with stand, ordered width × depth × height. Stand depth excludes additional cable clearance; this is not panel thickness.
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Aspect ratio: 16:9
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Declared brightness: 250 cd/m²
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Manufacturer specification · Manufacturer brightness specification. No full-screen HDR peak or measured luminance result is inferred.
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Static contrast claim: 1500000:1
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Manufacturer specification · Manufacturer static contrast claim, not a measured result or an overall picture-quality ranking.
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Response method and claim: 0.03 ms GtG
Conditions & context
Manufacturer specification · Manufacturer response claim with its stated method. GtG, MPRT and input lag describe different things; minimum values are not average measured results.
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Adaptive sync: NVIDIA G-SYNC Compatible
Conditions & context
Manufacturer specification · Manufacturer-listed compatibility; source, interface, operating mode and driver support are required.
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VESA mounting pattern: 100 × 100 mm
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Stand adjustment: Tilt −5° to +15°; swivel ±30°; pivot ±10°; height travel 110 mm
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Colour depth: 10-bit
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Manufacturer specification · Manufacturer colour-depth specification. FRC is retained where stated and is not relabelled as native panel bit depth.
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Screen shape: Flat
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Dimensions without stand: 718 × 69 × 418 mm (width × depth × height)
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HDR support: DisplayHDR True Black 400
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Manufacturer specification · Manufacturer-listed certification, not an independent test performed for this comparison.
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Stand height travel: 110 mm
Conditions & context
Manufacturer specification · Listed adjustment travel, separate from the overall assembled height.
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USB hub: 2 × USB 2.0 Type-A; 1 × USB 2.0 Type-B
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Manufacturer specification
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USB-C charging: 90 W
Conditions & context
Manufacturer specification · Manufacturer maximum USB-C charging output; not monitor power consumption. Compatible host and cable required.
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Screen surface: Anti-reflection
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Manufacturer warranty: 3 years, including OLED burn-in
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Manufacturer specification · Manufacturer-listed warranty coverage; regional terms, exclusions and proof-of-purchase requirements apply. This is not a seller warranty or a promise of lifespan.
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