MSI MPG 491CQP QD-OLED / LG UltraGear 27GP750-B

MSI MPG 491CQP QD-OLED: MPG 491CQP QD-OLED, 49-inch 32:9 curved monitor. The Samsung Odyssey OLED G9 of the same size and MSI’s other 49-inch models are separate.

LG UltraGear 27GP750-B: 27GP750-B; 27-inch Full HD 240 Hz IPS gaming monitor (Canadian spec table). The higher-resolution 27GP850-B and the OLED UltraGear models are separate products.

Specification	MSI MPG 491CQP QD-OLED	LG UltraGear 27GP750-B
Release year	2024	2021
Panel	49-inch QD-OLED; 5120 × 1440 (DQHD), 32:9; 1800R curve The 32:9 ratio gives a workspace equivalent to two 27-inch 1440p monitors side by side. The 1800R curve keeps the edges closer to the eyes. MSI	27-inch (68.5 cm) IPS; 1920 × 1080; 16:9; pixel pitch 0.3108 mm A 0.31 mm pixel pitch works out to about 82 ppi at 27 inches. Viewing angles are 178°/178°. LG
Refresh and response	144 Hz (adaptive range 48–144 Hz); 0.03 ms (GtG) Adaptive sync prevents tearing while the frame rate stays between 48 and 144. Reaching 144 fps at full resolution needs a very powerful graphics card. MSI	Up to 240 Hz; 1 ms (GtG, in Faster mode) LG quotes 1 ms for grey-to-grey transitions at the fastest overdrive setting. Dynamic Action Sync aims to reduce input lag, and Black Stabilizer brings out detail in dark scenes. LG
Brightness and contrast	Typical SDR 250 nits; 1,500,000:1; DisplayHDR True Black 400 True Black 400 is the OLED-class certification for very low black level and 400-nit HDR brightness. MSI	400 cd/m² typical (minimum 320); 1000:1 typical contrast (minimum 700:1) LG
Colour	99% DCI-P3, 146% sRGB, 98% Adobe RGB; 10-bit (1.07 billion colours) MSI	—
Adaptive sync	AMD FreeSync Premium Pro The Premium Pro tier includes low frame rate compensation and low-latency tone mapping in HDR. MSI	—
Connections	1 × 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 USB-C takes video from a laptop over one cable and charges it at up to 90 W. The USB ports run at USB 2.0 speed; there are no built-in speakers. MSI	2 × HDMI; 1 × DisplayPort 1.4; 3.5 mm headphone out A DisplayPort cable is in the box. There are no built-in speakers or USB hub. LG
Multi-view	PiP / PbP PbP splits the 49-inch screen side by side between two sources to show two computers at once; PiP shows one source in a small window over the other. MSI	—
Surface	Anti-reflection coating MSI	—
Stand and mounting	Tilt –5° to 20°; swivel –30° to 30°; height 0–100 mm; VESA 100 × 100 MSI	Height, tilt and pivot adjustment; VESA 100 × 100 Height adjustment changes the overall height with the stand between 465.9 and 575.9 mm. LG
Warranty	3 years, including panel burn-in Static images left on an OLED panel for long periods can leave permanent marks; MSI covers this risk under warranty. MSI	—
Size and weight	With stand 1195 × 328 × 410 mm; without stand 1195 × 190 × 372 mm; net 10.3 kg MSI	Without stand 614.2 × 364.8 × 51.7 mm, 3.9 kg; with stand 6 kg LG
Variable refresh	—	NVIDIA G-SYNC Compatible; AMD FreeSync Premium Variable refresh matches the monitor’s refresh rate to the graphics card’s frame rate to reduce tearing and stutter. LG
Colour and HDR	—	99% sRGB typical (minimum 95%, CIE1931); 16.7 million colours; HDR10; factory calibrated HDR10 signals are accepted; LG lists no DisplayHDR certification in the spec table, and typical brightness is 400 cd/m². LG
Power	—	External adapter; 45 W typical, 48 W maximum; under 0.5 W in sleep LG