LG 27U631A-B 27″ 100Hz Monitor

27 inch · 2560 x 1440 · 100 Hz · IPS

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Screen size 27 inch
Resolution 2560 x 1440
Refresh rate 100 Hz
Panel IPS
Response time 5 ms

LG 27U631A-B 27″ 100Hz Monitor is a 27-inch monitor with 2560 x 1440 resolution, a 100 Hz refresh rate and IPS panel. Fine for work and everyday use; for fast shooters look at 144 Hz and up. It came out in 2025.

Released: 2025-01-19

Specifications

Key specs

Screen size: 27 inch
Resolution: 2560 x 1440
Refresh rate: 100 Hz
Panel: IPS
Response time: 5 ms
Released: 2025-01-19
Part number: 27U631A-B.AEKQ
EAN / UPC: 8806096358535

Display

Display diagonal: 68.6 cm (27")
Display resolution: 2560 x 1440 pixels
HD type: Quad HD
Native aspect ratio: 16:9
Panel type: IPS
Display brightness (typical): 250 cd/m²
Response time: 5 ms
Response time measurement type: GTG (Gray to Gray)
Screen shape: Flat
Contrast ratio (typical): 1000:1
Maximum refresh rate: 100 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 16.7 million colours
Pixel pitch: 0.2331 x 0.2331 mm
Display diagonal (metric): 68 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: HDR Effect, High Dynamic Range 10 (HDR10)
sRGB coverage (typical): 99%

Performance

Flicker-free technology: Yes
Smart modes: Energy saving

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Design

Product colour: Black
Feet colour: Black

Ports & interfaces

Built-in USB hub: Yes
USB upstream port type: USB Type-C
Number of upstream ports: 1
USB Power Delivery (USB PD): Yes
USB Power Delivery up to: 15 W
HDMI: Yes
HDMI ports quantity: 1
Headphone out: Yes
Headphone outputs: 1

Ergonomics

VESA mounting: Yes
Panel mounting interface: 100 x 100 mm
Wall mountable: Yes
Tilt adjustment: Yes
Tilt angle range: -5 - 20°

Power

Energy efficiency class (SDR): E
Energy efficiency class (HDR): G
Energy consumption (SDR) per 1000 hours: 20 kWh
Energy consumption (HDR) per 1000 hours: 28 kWh
Power consumption (typical): 31 W
Power consumption (standby): 0.5 W
Power consumption (off): 0.3 W
AC input voltage: 100 - 240 V
AC input frequency: 50/60 Hz
Power supply type: External
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 613.2 mm
Depth (with stand): 215 mm
Height (with stand): 454.8 mm
Weight (with stand): 4.4 kg
Width (without stand): 613.2 mm
Depth (without stand): 43.7 mm
Height (without stand): 362.5 mm
Weight (without stand): 3.8 kg

Other features

Brand specific technologies: Black Stabilizer

Check the manufacturer's page before buying.

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About this product

Vivid Visuals at Wide Viewing Angles. Experience exceptional picture quality with the 27" QHD (2560x1440) display, with IPS technology for vivid and vibrant visuals - even at wider viewing angles. 100Hz Smoother, Seamless Visuals With a 100Hz refresh rate and 5ms(GTG) response time, on screen visuals are rendered clearly for ultra-smooth motion and fluidity. Bold Color on a 27" Screen Immerse yourself in a world of brilliant color from HDR10 that helps enhance picture quality and up to 99% sRGB color gamut expression to make games visually pop. Multiple Devices-One Cable Seamlessly connect to external devices or charge your laptop with the convenience of USB Type-C™ with up to 15W power delivery. Easy Viewing, Comfortable Reading This monitor comes with Reader Mode which can reduce blue light emission to help provide a reduction in eye fatigue. Action As It Happens Get a pro-level experience with the closest thing to real-time gaming. Dynamic Action Sync elevates your gameplay so you can respond every moment of the action with reduced input tag and unbelievable performance Never In The Dark Light up your gameplay with enhanced vision.

User manual (PDF)

27U631A-B vs similar monitors

	LG 27U631A-B 27″ 100Hz Monitor	HP Series 5 Pro 27 inch QHD USB-C Monitor 527pu	Samsung S61F 27″ 100Hz Monitor	Samsung LS27D600EALXPE 27″ 100Hz Monitor
Screen size	27 inch	27 inch	27 inch	27 inch
Resolution	2560 x 1440	2560 x 1440	2560 x 1440	2560 x 1440
Refresh rate	100 Hz	100 Hz	100 Hz	100 Hz
Panel	IPS	IPS	IPS	IPS
Response time	5 ms	5 ms	5 ms	5 ms
Released	2025	2025	2026	2026