Tested by IMartz

LG G6 27G640A-B

Name: LG G6 27G640A-B
Brand: LG

Affordable 300 Hz IPS with HDMI 2.1, USB-C and a light matte finish, although HDR is limited, factory calibration is weak and build quality could be better.

PanelIPS

IMartz verdict

Pros

300 Hz at 1440p at a reasonable price.
Very good overdrive behavior with VRR
HDMI 2.1, USB-C and a very light matte finish.

Things to consider

Weak factory calibration for grayscale and white balance.
Very limited HDR with insufficient contrast.
Disappointing build quality for LG.

A good fit if…

PC gaming at 1440p with very smooth motion.
Those who prefer a well-known brand and find it discounted.
Users who prioritize VRR, G-Sync and good adaptive overdrive.

Consider another option if…

You want the best possible value for money.
You want good factory calibration or color work without a colorimeter.
You place a high value on build quality, contrast or HDR.

Measurements and specifications

IMartz test results. See each section for the measurement conditions.

Display and format

General specifications

Panel

IPS

Resolution

1440p

Refresh rate

300 Hz

Screen size

27"

Aspect ratio

16:9

Curvature

Flat

Screen finish

Light matte

Speakers

SDR performance

Color, brillo, contraste y comportamiento básico fuera de HDR.

SDR assessmentGood

Coverage

DCI-P3

94.6 %

Adobe RGB

93.4 %

Accuracy and calibration

DCI-P3 accuracy

2.17

Test note

Grayscale: 3.4

sRGB mode

Yes

sRGB accuracy

2.3

Brightness uniformity

Acceptable

Colour uniformity

Poor

Brightness and contrast

SDR brightness

432 nits

Native contrast

1120:1

HDR performance

Brillo pico, volumen de color, EOTF y experiencia HDR real.

HDR assessmentLimited

HDR brightness and color

HDR brightness

440 nits

BT.2020 coverage

72.3 %

BT.2020 colour volume

63.2 %

Accuracy and tracking

ΔE ITP HDR

8.11

EOTF tracking

Adequate

Test note

Midtone tracking is fairly close to the reference in Warm, Custom and Manual 0, but black levels and shadows are raised. Custom reaches around 440 nits; highlights clip at the panel's limit. Without local dimming, HDR remains limited by contrast.

Response time and PC gaming

Overdrive, tiempo de respuesta, overshoot, VRR e input lag.

Gaming ratingVery fast

Response measurements

Response time

4.64 ms

Overshoot

1.53 RGB

Input lag

1.5 ms

Features and settings

VRR PC

Yes

Recommended overdrive

Fast

PS5 and consoles

Compatibilidad con VRR, ALLM y resoluciones permitidas.

PS5 assessmentCompatible

Compatibility

VRR PS5

Yes

ALLM PS5

PS5 resolutions

1440p 120 Hz
4K 120 Hz

PS5 notes

DAS is a low-latency mode; ALLM was not confirmed in the test.

Connectivity

Entradas de vídeo, USB-C, KVM, hub USB y extras de conexión.

Video

HDMI

2 × Full-bandwidth HDMI 2.1

DisplayPort

1 × DisplayPort 1.4 con DSC

Additional connections

USB-C

1x USB-C con DP Alt Mode y 15W

USB hub

2x USB-A + 1x USB-B upstream

Audio output

Yes

Stand, mounting and extras

Calidad física, ergonomía, VESA y detalles destacables.

RatingExcellent

Ergonomics and mounting

Stand adjustments

Yes

Stand quality

Adequate

VESA

Yes

Extras

Notable extras

HDMI 2.1, USB-C with video and 15 W, USB hub

HDR notes

Photos and test results

Open an image to view the full-size charts and browse the tests.

Grayscale and gamma

LG G6 27G640A-B · Grayscale · User — **Grayscale · User**

LG G6 27G640A-B · Grayscale · Warm — **Grayscale · Warm**

LG G6 27G640A-B · Grayscale · Medium — **Grayscale · Medium**

LG G6 27G640A-B · Grayscale · DCI-P3 mode — **Grayscale · DCI-P3 mode**

LG G6 27G640A-B · Grayscale · sRGB mode — **Grayscale · sRGB mode**

Colour gamut and accuracy

LG G6 27G640A-B · DCI-P3 coverage · Native — **DCI-P3 coverage · Native**

LG G6 27G640A-B · ColorChecker DCI-P3 · Native — **ColorChecker DCI-P3 · Native**

LG G6 27G640A-B · Adobe RGB coverage · Native — **Adobe RGB coverage · Native**

LG G6 27G640A-B · sRGB coverage · Native — **sRGB coverage · Native**

LG G6 27G640A-B · Coverage · DCI-P3 mode — **Coverage · DCI-P3 mode**

LG G6 27G640A-B · ColorChecker · DCI-P3 mode — **ColorChecker · DCI-P3 mode**

LG G6 27G640A-B · Coverage · sRGB mode — **Coverage · sRGB mode**

LG G6 27G640A-B · ColorChecker · sRGB mode — **ColorChecker · sRGB mode**

Calibration

LG G6 27G640A-B · Brightness and contrast · Medium — **Brightness and contrast · Medium**

LG G6 27G640A-B · Brightness and contrast · Custom — **Brightness and contrast · Custom**

Brightness and uniformity

LG G6 27G640A-B · Color uniformity — **Color uniformity**

LG G6 27G640A-B · Brightness uniformity — **Brightness uniformity**

Luminance and EOTF

LG G6 27G640A-B · EOTF · Warm — **EOTF · Warm**

LG G6 27G640A-B · EOTF · Custom — **EOTF · Custom**

LG G6 27G640A-B · EOTF · Manual 0 — **EOTF · Manual 0**

HDR colour

LG G6 27G640A-B · BT.2020 coverage — **BT.2020 coverage**

LG G6 27G640A-B · BT.2020 saturation — **BT.2020 saturation**

LG G6 27G640A-B · DCI-P3 coverage — **DCI-P3 coverage**

LG G6 27G640A-B · DCI-P3 saturation — **DCI-P3 saturation**

LG G6 27G640A-B · ColorChecker HDR — **ColorChecker HDR**

LG G6 27G640A-B · ColorMatch HDR — **ColorMatch HDR**

LG G6 27G640A-B · HDR color volume — **HDR color volume**

Alternatives

Other options, each with its own specifications and test results.

LG G6 27G640A-B

IMartz verdict