LG 48GQ900 48″ 138Hz Monitor

48 inch · 3840 x 2160 · 138 Hz

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Screen size 48 inch
Resolution 3840 x 2160
Refresh rate 138 Hz
Response time 0.1 ms

LG 48GQ900 48″ 138Hz Monitor is a 48-inch monitor with 3840 x 2160 resolution and a 138 Hz refresh rate. Fine for work and everyday use; for fast shooters look at 144 Hz and up. It came out in 2026.

Released: 2026-03-31

Specifications

Key specs

Screen size: 48 inch
Resolution: 3840 x 2160
Refresh rate: 138 Hz
Response time: 0.1 ms
Released: 2026-03-31
Part number: 48GQ900-B.ATM

Display

Display diagonal: 120.7 cm (47.5")
Display resolution: 3840 x 2160 pixels
HD type: 4K Ultra HD
Native aspect ratio: 16:9
Display technology: OLED
Display brightness (typical): 330 cd/m²
Response time: 0.1 ms
Screen shape: Flat
Contrast ratio (typical): 1500000:1
Maximum refresh rate: 138 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Pixel pitch: 0.274 x 0.274 mm
Display diagonal (metric): 120.7193 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: HDR Effect, High Dynamic Range 10 (HDR10)
Colour gamut standard: DCI-P3
Colour gamut: 99%

Performance

NVIDIA G-SYNC: Yes
NVIDIA G-SYNC type: G-SYNC
AMD FreeSync: Yes
AMD FreeSync type: FreeSync Premium

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Multimedia

Number of speakers: 2
RMS rated power: 40 W
Built-in speaker(s): Yes

Design

Market positioning: Gaming
Product colour: Black

Ports & interfaces

USB hub version: 2.0 / 3.2 Gen 1 (3.1 Gen 1)
Number of USB Type-B upstream ports quantity: 1
USB Type-A downstream ports quantity: 2
HDMI: Yes
HDMI ports quantity: 3
DisplayPorts quantity: 1
Headphone out: Yes

Ergonomics

VESA mounting: Yes
Panel mounting interface: 300 x 200 mm

Power

Energy efficiency class (SDR): F
Energy efficiency class (HDR): F
Energy consumption (SDR) per 1000 hours: 60 kWh
Energy consumption (HDR) per 1000 hours: 69 kWh
Power consumption (typical): 175 W
Power consumption (max): 253 W
Power consumption (off): 0.3 W
AC input voltage: 100 - 240 V

Weight & dimensions

Width (with stand): 1070.6 mm
Depth (with stand): 184.8 mm
Height (with stand): 659.7 mm
Weight (with stand): 16.8 kg
Width (without stand): 1070.6 mm
Depth (without stand): 46.6 mm
Height (without stand): 623.9 mm
Weight (without stand): 15.5 kg

Other features

Brand specific technologies: Black Stabilizer, Crosshair
FPS counter: Yes

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About this product

48” UHD 4K OLED

Widen Your Gaming View Thanks to UHD 4K OLED display representing outstanding clarity and realistic picture with HDR10 delivering dynamic contrast, LG UltraGear™ monitor can help gamers immerse into the game and feel as if they were in the center of the game at the 48-inch large screen.

SELF-LIT OLED

SELF-LIT OLED Pixel provides a more immersive gaming experience with its rich color expression and the contrast ratio as well as the fast response time. OLED 1.5 M : 1 Contrast Ratio With 1,500,000:1 high contrast ratio, the gamer can experience almost all colors and visuals of the game intended by the creators precisely. Anti-Glare & Low reflection Show Only Your Game Applying Anti-Glare & Low reflection technology can provide a better viewing experience anywhere by reducing screen distraction even in the surrounding lighting environment. In addition, it has the effect of reducing eye strain with a Flicker-free panel. 0.1ms (GtG) Response time Overwhelming Speed, Diving into Gaming With 0.1ms (GtG) response time, reducing reverse ghosting and helping objects render clearly, let you enjoy the game with smoother movement and surreal visual fluidity.

User manual (PDF)

48GQ900 vs similar monitors

	LG 48GQ900 48″ 138Hz Monitor	ASUS ProArt OLED PA329CDV 32″ 120Hz Monitor	ASUS ProArt OLED PA279CDV 27″ 120Hz Monitor	EIZO ColorEdge CG3200X 32″ 60Hz Monitor
Screen size	48 inch	32 inch	27 inch	32 inch
Resolution	3840 x 2160	3840 x 2160	3840 x 2160	3840 x 2160
Refresh rate	138 Hz	120 Hz	120 Hz	60 Hz
Response time	0.1 ms	0.1 ms	0.1 ms	0.1 ms
Released	2026	2026	2026	2026