LG 27G640A-B 27″ 300Hz Monitor

27 inch · 2560 x 1440 · 300 Hz · IPS

See today's price, delivery and offers at the store.

Screen size 27 inch
Resolution 2560 x 1440
Refresh rate 300 Hz
Panel IPS
Response time 1 ms

LG 27G640A-B 27″ 300Hz Monitor is a 27-inch monitor with 2560 x 1440 resolution, a 300 Hz refresh rate and IPS panel. The high refresh rate makes fast games look smoother. It came out in 2025.

Released: 2025-07-11

Specifications

Key specs

Screen size: 27 inch
Resolution: 2560 x 1440
Refresh rate: 300 Hz
Panel: IPS
Response time: 1 ms
Released: 2025-07-11
Part number: 27G640A-B
EAN / UPC: 8806096588642

Display

Display diagonal: 68.6 cm (27")
Display resolution: 2560 x 1440 pixels
HD type: 2K Ultra HD
Native aspect ratio: 16:9
Display technology: LED
Panel type: IPS
Touchscreen type: Tabletop
Display brightness (typical): 400 cd/m²
Response time: 1 ms
Screen shape: Flat
Contrast ratio (typical): 1300:1
Maximum refresh rate: 300 Hz
Viewing angle, horizontal: 178°
Viewing angle, vertical: 178°
Display number of colours: 1.07 billion colours
Pixel pitch: 232.8 x 232.8 mm
Display diagonal (metric): 68.378 cm
High Dynamic Range (HDR) supported: Yes
High Dynamic Range (HDR) technology: DisplayHDR 400
DCI-P3 coverage: 95%

Performance

NVIDIA G-SYNC: Yes
AMD FreeSync: Yes
AMD FreeSync type: FreeSync Premium
Flicker-free technology: Yes

View all specifications +7 more sectionsShow fewer specifications

Multimedia

Number of speakers: 2
RMS rated power: 10 W
Built-in speaker(s): Yes

Design

Market positioning: Gaming
Product colour: Black

Ports & interfaces

Built-in USB hub: Yes
USB hub version: 2.0 / 3.2 Gen 1 (3.1 Gen 1)
Number of upstream ports: 1
Number of downstream ports: 2
USB Power Delivery (USB PD): Yes
USB Power Delivery up to: 15 W
HDMI: Yes
HDMI ports quantity: 2
DisplayPorts quantity: 1
DisplayPort version: 1.4
Headphone out: Yes

Ergonomics

Height adjustment: Yes
Pivot: Yes
Swivelling: Yes

Power

Energy efficiency class (SDR): F
Energy efficiency class (HDR): G
Energy consumption (SDR) per 1000 hours: 26 kWh
Energy consumption (HDR) per 1000 hours: 48 kWh
Power consumption (off): 0.3 W
AC input voltage: 100 - 240 V
AC input frequency: 50/60 Hz
Energy efficiency scale: A to G

Weight & dimensions

Width (with stand): 613.7 mm
Depth (with stand): 239 mm
Height (with stand): 539.1 mm
Weight (with stand): 5.47 kg
Width (without stand): 613.7 mm
Depth (without stand): 57.4 mm
Height (without stand): 365.8 mm
Weight (without stand): 3.4 kg

Other features

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

Check the manufacturer's page before buying.

Ready to buy? Get the LG 27G640A-B 27″ 300Hz Monitor at today's price.Buy now

About this product

Clarity that keeps you in control With its 27-inch QHD (2560x1440) screen, the monitor delivers lifelike visuals and consistent image quality, bringing clarity and depth. The 1440p resolution and 16:9 aspect ratio offers a balanced, full-screen view that enhances spatial awareness in gameplay—keeping you immersed while making key visual elements easy to follow. Immerse in true colors, conquer the game Our gaming monitor supports a wide color spectrum, 95% (Typ.) of the DCI-P3 color gamut, expressing high-fidelity color for reproducing with VESA DisplayHDR 400, enabling a realistic gaming experience. Overwhelming speed, diving into gaming with 1ms (GtG) The ultra-fast 1ms response time (GtG), reducing reverse ghosting and providing fast response time, lets you to enjoy a whole new gaming performance. Smooth motion, infinite play Minimize tears and lags with AMD FreeSync™ Premium technology and NVDIA-tasted, officially validated G-SYNC® compatibility on a 4K gaming monitor. Experience significantly reduced screen tearing and stuttering for smooth,crystal-clear gameplay.

27G640A-B vs similar monitors

	LG 27G640A-B 27″ 300Hz Monitor	LG ELECTRONICS 27″ 300Hz Monitor	LG 27G550B-B 27″ 300Hz Monitor	Gigabyte G27Q26 27” QHD Gaming Monitor
Screen size	27 inch	27 inch	27 inch	27 inch
Resolution	2560 x 1440	1920 x 1080	1920 x 1080	2560 x 1440
Refresh rate	300 Hz	300 Hz	300 Hz	275 Hz
Panel	IPS	IPS	IPS	IPS
Response time	1 ms	1 ms	1 ms	1 ms
Released	2025	2026	2026	2026