MSI MPG 321URX QD-OLED / ASUS ROG Swift OLED PG27AQDM

MSI MPG 321URX QD-OLED: MPG 321URX QD-OLED, black. The DisplayPort 2.1 MPG 322URX QD-OLED and the white MPG 321URXW are separate models.

ASUS ROG Swift OLED PG27AQDM: PG27AQDM: a 26.5-inch (27-inch class) 1440p 240 Hz WOLED gaming monitor. The brighter PG27AQDP (480 Hz) and the QD-OLED PG27UCDM are separate models.

SpecificationMSI MPG 321URX QD-OLEDASUS ROG Swift OLED PG27AQDM
Release year20242023
Panel31.5-inch flat QD-OLED; 3840 × 2160; 0.1814 mm pixel pitch; anti-reflection surface

QD-OLED converts blue OLED light to red and green with quantum dots; because each pixel makes its own light, blacks can switch fully off. 4K at 32 inches gives roughly 140 ppi.

MSI		26.5-inch WOLED; 2560 × 1440 (16:9); 0.229 mm pixel pitch; anti-glare surface

WOLED is LG Display’s panel type using a white OLED layer with colour filters; each pixel makes its own light, so blacks go fully dark. Long-lasting static images raise the risk of burn-in.

ASUS
Refresh and response240 Hz (48–240 Hz variable range); 0.03 ms GtG

MSI says 240 Hz at 4K is reachable over DisplayPort 1.4a, HDMI 2.1 and USB-C alike. 0.03 ms is grey-to-grey transition time, not total input lag.

MSI		—
Brightness and HDR250 nits typical; DisplayHDR True Black 400; 1,500,000:1 typical contrast

DisplayHDR True Black 400 is the VESA class for displays that can produce deep blacks such as OLED; it requires 400-nit small-area brightness and a very low black level. 250 nits is the full-screen SDR figure.

MSI		—
Colour10-bit (1.07 billion colours); 99% DCI-P3, 97% Adobe RGB, 138% sRGB

138% sRGB means the gamut extends well beyond sRGB; use the monitor’s sRGB mode so sRGB content does not look oversaturated.

MSI		DCI-P3 99%; sRGB 135%; factory pre-calibration report ASUS
Adaptive syncG-SYNC Compatible; AMD FreeSync Premium Pro

Adaptive sync matches the display refresh to the game’s frame rate to reduce tearing and stutter. FreeSync Premium Pro adds a low-latency requirement in HDR.

MSI		—
Inputs1 × DisplayPort 1.4a; 2 × HDMI 2.1; 1 × USB-C (DP Alt Mode, 90 W PD); 2 × USB 2.0 Type-A, 1 × USB 2.0 Type-B; headphone out

The USB-C input can carry video and charge a laptop at up to 90 W over a single cable. Display Ninja says the monitor has a built-in KVM; the USB-A ports run at USB 2.0 speed.

MSI		1 × DisplayPort 1.4 DSC; 2 × HDMI 2.0; headphone jack; 2 × USB 3.2 Gen 1 Type-A hub

DSC (Display Stream Compression) compresses the signal without visible loss so DisplayPort 1.4 has enough bandwidth for high refresh rates. There are no speakers and no USB-C input.

ASUS
Stand and mountingTilt −5/15°, swivel ±30°, pivot ±10°, 110 mm height adjustment; VESA 100 × 100 MSITilt +20° / −5°; swivel ±30°; pivot ±90°; 0–110 mm height; 1/4-inch tripod socket; VESA 100 × 100 (with kit); Aura RGB

The VESA mount kit is included in the box.

ASUS
Size and weightWith stand 718 × 242 × 483 mm; without stand 718 × 69 × 418 mm; 9.6 kg net MSIWith stand 60.5 × 54.8 × 27.4 cm, 6.9 kg; without stand 60.5 × 35.1 × 5.0 cm, 4.2 kg ASUS
Warranty3 years, including panel burn-in

On OLED panels, images left static for long periods can leave a permanent mark (burn-in); MSI covers this risk under warranty. Terms may vary by country.

MSI		—
Refresh rate and response—240 Hz (DisplayPort); 120 Hz over HDMI; 0.03 ms (GtG)

240 Hz is only available through the DisplayPort input; ASUS’s signal table limits the HDMI inputs to 120 Hz. For PC games above 120 Hz, use a DisplayPort cable.

ASUS
Brightness and contrast—HDR peak 1,000 cd/m²; contrast 1,500,000:1; 10-bit (1.07 billion colours)

Peak brightness applies to a small part of the screen; with a full white screen brightness drops noticeably. ASUS notes peak brightness may vary with colour pre-calibration.

ASUS
HDR—HDR10

Dolby Vision and HDR10+ support are not listed.

ASUS
Variable refresh—VESA AdaptiveSync Display 240Hz; AMD FreeSync Premium; G-SYNC Compatible

Variable refresh matches the monitor to the graphics card’s frame rate to reduce tearing and stutter.

ASUS
OLED care and warranty—ASUS OLED Care; 2-year warranty (including panel burn-in)

The warranty also covers panel burn-in; terms may vary by region.

ASUS
Certifications—TÜV Flicker-free; TÜV Low Blue Light (hardware solution) ASUS
Power—External power adapter; 100–240 V, 50/60 Hz ASUS