ASUS ROG Swift OLED PG34WCDM / MSI MPG 341CQPX QD-OLED

ASUS ROG Swift OLED PG34WCDM: PG34WCDM (2024). 34-inch class (33.94-inch) 800R curved WOLED.

MSI MPG 341CQPX QD-OLED: MPG 341CQPX QD-OLED, 34-inch 240 Hz curved ultrawide monitor, black. The 175 Hz MAG 341CQP QD-OLED and later revisions are separate models.

SpecificationASUS ROG Swift OLED PG34WCDMMSI MPG 341CQPX QD-OLED
Release year20242024
Panel33.94-inch WOLED; 3440 × 1440; 21:9; 800R curve; anti-glare (matte) surface

800R means the screen curves like an arc of a circle with an 800 mm radius. Pixel pitch is 0.231 mm.

ASUS		34.18-inch curved QD-OLED, 1800R; 3440 × 1440 (UWQHD), 21:9; 0.2315 mm pixel pitch

1800R is the curve of a circle with a 1.8 m radius; it brings the edges of the wide screen closer to your eyes. The 21:9 ratio gives a wider field of view in supported games and room for two windows side by side.

MSI
Refresh rate and response240 Hz; 0.03 ms (GtG); Adaptive-Sync VRR

ASUS lists VESA AdaptiveSync Display 240Hz, AMD FreeSync Premium Pro and G-SYNC Compatible certification.

ASUS		—
Brightness and HDR1300 cd/m² HDR peak brightness; HDR10; VESA DisplayHDR 400 True Black

ASUS gives this figure, asterisked, as peak HDR brightness; it is not sustained full-screen brightness.

ASUS		250 nits typical SDR; 1,000 nits peak HDR at 3% APL, 450 nits at 10% APL; VESA DisplayHDR True Black 400; 1,500,000:1 contrast

1,000 nits is reached only on bright areas covering about 3% of the screen (explosions, sun glints); as the bright area grows, OLED automatic brightness limiting kicks in.

MSI
Colour10-bit (1.07 billion colours); DCI-P3 99%, sRGB 135%; ΔE ≤ 2; 1,500,000:1 contrast

A factory colour calibration report is in the box.

ASUS		10-bit (1.07 billion colours); DCI-P3 99.3%, Adobe RGB 97.8%, sRGB 139.1% (CIE 1976)

sRGB above 100% means sRGB content can look oversaturated unless shown in a clamped mode.

MSI
Video inputs1 × DisplayPort 1.4 (DSC); 2 × HDMI 2.1 (FRL); 1 × USB-C (DP Alt Mode, 90 W power)

The USB-C input can take video from a laptop over one cable while charging it at up to 90 W. All three inputs support vertical frequencies up to 240 Hz.

ASUS		1 × DisplayPort 1.4a (3440 × 1440 240 Hz); 2 × HDMI 2.1 (UWQHD 240 Hz); 1 × USB-C (DisplayPort Alt Mode, 98 W Power Delivery)

USB-C takes video from a laptop over one cable and charges it at up to 98 W; the PD charging option must be enabled in the OSD. The USB-C data path runs at USB 2.0 speed.

MSI
Other connections and featuresUSB hub: 2 × USB 3.2 Gen 1 Type-A, 1 × USB 2.0 Type-A; KVM switch; optical audio (S/PDIF) out; headphone out; no built-in speakers; proximity sensor

With KVM a keyboard and mouse plugged into the monitor can be shared between two computers.

ASUS		—
Power31 W consumption; external power adapter; 100–240 V ASUS—
Stand and mountingTilt +20° / −5°, swivel ±15°, height 0–110 mm; VESA 100 × 100 mm; 1/4-inch tripod socket; Kensington lock

The tripod socket is for mounting a camera or light on top of the stand.

ASUS		Tilt −5° / 20°, swivel −30° / 30°, height 0–100 mm; VESA 100 × 100 MSI
Size and weightWith stand 78.6 × 55.1 × 29.3 cm and 8.4 kg; without stand 78.6 × 37.2 × 16.1 cm and 5.6 kg

ASUS notes dimensions and weight may vary by region.

ASUS		With stand 812 × 318 × 427 mm, 8.8 kg; without stand 812 × 130 × 361 mm, 6.66 kg MSI
Refresh and response—240 Hz (48–240 Hz variable range); 0.03 ms GtG

240 Hz is reached at full resolution over DisplayPort 1.4a or HDMI 2.1. 0.03 ms is pixel transition time, not total input lag. Below 48 fps the frame rate falls outside the variable refresh range.

MSI
Variable refresh—G-SYNC Compatible, AMD FreeSync Premium Pro

Matching refresh to the graphics card’s frame rate reduces tearing and stutter; FreeSync Premium Pro also covers low-latency HDR operation.

MSI
USB and audio—2 × USB 2.0 Type-A, 1 × USB 2.0 Type-B (upstream); headphone out; no built-in speakers

The USB-A ports are for low-speed devices like keyboard and mouse; they are not suited to external SSDs.

MSI
KVM and multi-view—Built-in KVM; PiP (picture-in-picture) and PbP (picture-by-picture)

KVM shares the keyboard and mouse attached to the monitor between two computers; switching is done via the USB option in the OSD. PbP splits the screen between two sources, PiP shows one in a small window.

MSI
Surface and viewing angle—Anti-reflection surface treatment; 178° / 178° MSI
Warranty—3 years, including panel burn-in

On OLED, images left static for long periods can leave permanent marks; MSI covers this risk under warranty. Terms can vary by country.

MSI