Tested by IMartz

LG 27GX704A-B

Name: LG 27GX704A-B
Brand: LG

27-inch glossy 1440p 240 Hz WOLED with very good calibration, smooth motion and a very competitive sale price.

PanelWOLED

8.7/10

Rating
by IMartzRead the verdict ↘

Resolution: 1440p
Refresh rate: 240 Hz
Screen size: 26.5"

Price and availability

Price in Spain

€440.99Source: PcComponentes. Catalogue price checked on 02/10/2026 18:26 CEST. Shipping is extra. Confirm the final price and availability at the retailer.

Check price at Amazon View at PcComponentes View at Coolmod

You can also check this model at US retailers.View at Amazon.com

IMartz verdict

Pros

True glossy finish with a very clean, clear image
Very competitive below €450
Good factory calibration and hardware calibration support

Things to consider

Text clarity is not on par with IPS or some QD-OLED models
Banding or DSE typical of WOLED
Its finish reflects a lot of ambient light

A good fit if…

Gaming in a room with controlled lighting
Deep blacks without a magenta tint
Those who want an inexpensive WOLED without many compromises

Consider another option if…

You will use it for many hours of text, office work or static desktop content
Your room has a lot of direct light or reflections that are hard to control
You want advanced OLED features such as anti-flicker, BFI or a presence sensor

Measurements and specifications

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

Display and format

General specifications

Panel

WOLED

Resolution

1440p

Refresh rate

240 Hz

Screen size

26.5"

Aspect ratio

16:9

Curvature

Flat

Screen finish

Glossy

SDR performance

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

SDR assessmentExcellent

Coverage

DCI-P3

97.7 %

Adobe RGB

94.9 %

Accuracy and calibration

DCI-P3 accuracy

1.2

sRGB mode

Yes

sRGB accuracy

1.31

Brightness uniformity

Very good

Colour uniformity

Acceptable

HDR performance

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

HDR assessmentGood

HDR brightness and color

BT.2020 coverage

73.4 %

BT.2020 colour volume

66.9 %

Accuracy and tracking

ΔE ITP HDR

6.62

Test note

but reds lack saturation

EOTF tracking

Adequate

Test note

Peak Low is closer to the reference, although it slightly lifts shadows and darkens some midtones. Peak High brightens shadows and midtones much more, especially with small lit areas. As the lit area grows, maximum brightness falls and highlights are compressed.

Peak-mode EOTF

Raises shadow levels

OLED brightness

Datos específicos de brillo en OLED, APL y desbloqueos relevantes.

OLED brightness assessmentVery good

Brightness measurements

SDR 100% APL

267 nits

HDR 10% APL

585 nits

HDR 2% APL

1105 nits

Peak HDR 10%

786 nits

OLED uniform brightness

Very good

OLED brightness unlock

Yes

Response time and PC gaming

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

Gaming ratingExcellent

Response measurements

Response time

0.8 ms

Overshoot

0.73 RGB

Input lag

2.2 ms

Features and settings

VRR PC

Yes, verified

MBR / Strobing

None

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

Select HDMI 2.1 in AV mode to receive 4K at 120 Hz; in PC mode, the test was limited to 4K at 60 Hz. ALLM did not activate.

OLED characteristics

Subpíxel, claridad de texto, protecciones y limitaciones del panel.

OLED assessmentAcceptable

Panel and text

Subpixel layout

RGWB

Text clarity

Mediocre

Protection and extras

Burn-in protections

Basic

Limitations

Banding / DSE, text clarity/fringing could be better

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

Additional connections

USB hub

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

Audio output

Yes

Stand, mounting and extras

Calidad física, ergonomía, VESA y detalles destacables.

RatingGood

Ergonomics and mounting

Stand adjustments

Yes

Stand quality

Good

VESA

Yes

Extras

Notable extras

DAS mode, black equalizer.

Photos and test results

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

Grayscale and gamma

LG 27GX704A-B · Grayscale · Gamer 1 — **Grayscale · Gamer 1**

LG 27GX704A-B · Grayscale · DCI-P3 mode — **Grayscale · DCI-P3 mode**

LG 27GX704A-B · Grayscale · sRGB mode — **Grayscale · sRGB mode**

Colour gamut and accuracy

LG 27GX704A-B · DCI-P3 coverage · Native — **DCI-P3 coverage · Native**

LG 27GX704A-B · ColorChecker DCI-P3 · Native — **ColorChecker DCI-P3 · Native**

LG 27GX704A-B · Adobe RGB coverage · Native — **Adobe RGB coverage · Native**

LG 27GX704A-B · BT.2020 coverage · Native — **BT.2020 coverage · Native**

LG 27GX704A-B · sRGB coverage · Native — **sRGB coverage · Native**

LG 27GX704A-B · Coverage · DCI-P3 mode — **Coverage · DCI-P3 mode**

LG 27GX704A-B · ColorChecker · DCI-P3 mode — **ColorChecker · DCI-P3 mode**

LG 27GX704A-B · Coverage · sRGB mode — **Coverage · sRGB mode**

LG 27GX704A-B · ColorChecker · sRGB mode — **ColorChecker · sRGB mode**

LG 27GX704A-B · SDR brightness by area — **SDR brightness by area**

LG 27GX704A-B · Brightness by setting — **Brightness by setting**

Brightness and uniformity

LG 27GX704A-B · Color uniformity — **Color uniformity**

LG 27GX704A-B · Brightness uniformity — **Brightness uniformity**

Calibration

Luminance and EOTF

LG 27GX704A-B · HDR brightness by area — **HDR brightness by illuminated area**

HDR tracking · Peak 1000

LG 27GX704A-B · EOTF · Peak High · 2 % APL — **EOTF · Peak High · 2 % APL**

LG 27GX704A-B · EOTF · Peak High · 10 % APL — **EOTF · Peak High · 10 % APL**

LG 27GX704A-B · EOTF · Peak High · 25 % APL — **EOTF · Peak High · 25 % APL**

LG 27GX704A-B · EOTF · Peak High · 50 % APL — **EOTF · Peak High · 50 % APL**

LG 27GX704A-B · EOTF · Peak High · 100 % APL — **EOTF · Peak High · 100 % APL**

HDR tracking · TB500

LG 27GX704A-B · EOTF · Peak Low · 100 % APL — **EOTF · Peak Low · 100 % APL**

LG 27GX704A-B · EOTF · Peak Low · 50 % APL — **EOTF · Peak Low · 50 % APL**

LG 27GX704A-B · EOTF · Peak Low · 25 % APL — **EOTF · Peak Low · 25 % APL**

LG 27GX704A-B · EOTF · Peak Low · 10 % APL — **EOTF · Peak Low · 10 % APL**

LG 27GX704A-B · EOTF · Peak Low · 2 % APL — **EOTF · Peak Low · 2 % APL**

HDR colour

LG 27GX704A-B · ColorChecker HDR · Peak Low — **ColorChecker HDR · Peak Low**

LG 27GX704A-B · ColorMatch HDR · Peak Low — **ColorMatch HDR · Peak Low**

LG 27GX704A-B · DCI-P3 coverage — **DCI-P3 coverage**

LG 27GX704A-B · DCI-P3 saturation — **DCI-P3 saturation**

LG 27GX704A-B · BT.2020 coverage — **BT.2020 coverage**

LG 27GX704A-B · BT.2020 saturation — **BT.2020 saturation**

LG 27GX704A-B · HDR color volume — **HDR color volume**

Alternatives

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

LG 27GX704A-B

IMartz verdict