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27 inch black OLED gaming monitor with glossy virtually borderless screen and adjustable stand

LG Electronics

LG Electronics 27GX704A-B 27" QHD 240Hz OLED gaming monitor

SKU CH-3ANG-X51SK MPN 27GX704A-B

A 27-inch QHD OLED gaming monitor delivering 240Hz refresh rate, 0.03ms response time and 1300nits peak brightness with G-Sync and FreeSync Premium Pro support

  • Cabinet ColorBlack
  • Bezel Design4-side virtually borderless
  • Screen Size27"
  • WidescreenYes
  • PanelOLED
  • Display TypeQHD

Option 240Hz

Les versions barrées existent, mais ne sont pas disponibles ici.

  • 240Hz refresh rate and 0.03ms response time deliver ultra-smooth, tear-free gameplay
  • Peak brightness of 1300 nits makes highlights vivid while 275 nits standard keeps scenes clear
  • VESA DisplayHDR True Black 400 with 1,500,000:1 contrast reveals detail in deep blacks and bright sparks
  • 5% DCI-P3 coverage across 1.07 billion colours renders vibrant, lifelike game worlds
  • UL-certified Anti-Glare, Flicker-Free and Low Blue Light reduce eye strain during long sessions

27" QHD OLED 240Hz Gaming Monitor

The LG UltraGear 27GX704A-B is a 27 inch QHD OLED display built for competitive gaming. Its 2560 x 1440 panel runs at 240 Hz with a 0.03 ms response time and supports both FreeSync Premium Pro and G-Sync Compatible variable refresh. The glossy finish and 98.5% DCI-P3 coverage target players who want high motion clarity and vivid colour.

OLED Panel Brightness and Eye-Comfort Certifications

The self-emissive OLED delivers a typical brightness of 275 nits and can peak at 1300 nits for HDR highlights, backed by VESA DisplayHDR True Black 400 and a 1,500,000:1 contrast ratio. Three UL certifications confirm anti-glare, flicker-free operation and low blue-light output, helping to reduce eye strain during long sessions without active cooling noise.

Upgrade From Standard IPS or 144Hz Panels

Moving from a typical IPS monitor at 144 Hz or lower gives an immediate jump in motion handling, black depth and HDR impact thanks to the 240 Hz refresh, near-instant pixel response and true blacks. The improvement is most noticeable in fast-paced shooters and dark-scene games where contrast and speed matter most.

Points forts

  • 240Hz refresh rate and 0.03ms response time deliver ultra-smooth, tear-free gameplay
  • Peak brightness of 1300 nits makes highlights vivid while 275 nits standard keeps scenes clear
  • VESA DisplayHDR True Black 400 with 1,500,000:1 contrast reveals detail in deep blacks and bright sparks
  • 5% DCI-P3 coverage across 1.07 billion colours renders vibrant, lifelike game worlds
  • UL-certified Anti-Glare, Flicker-Free and Low Blue Light reduce eye strain during long sessions

Caractéristiques

BrandLG
SeriesUltraGear
Model27GX704A-B
Part Number27GX704A-B
Cabinet ColorBlack
Bezel Design4-side virtually borderless
Screen Size27"
WidescreenYes
PanelOLED
Display TypeQHD
Adaptive Sync TechnologyFreeSync Premium Pro & G-Sync Compatible
Resolution2560 x 1440 (2K)
Aspect Ratio16:9
Brightness275nits (standard) / 1300nits (peak)
Contrast Ratio1,500,000:1
Response Time0.03 ms
Color GamutDCI-P3 Typical 98.5%
Display Colors1.07 Billion
Monitor Pixel Density0.2292 x 0.2292
Refresh Rate240Hz
VESA Certified DisplayHDRDisplayHDR True Black 400
Curved Surface ScreenFlat Panel
HDMI2 x HDMI 2.1
DisplayPort1 x DisplayPort 1.4
Video Ports1 x DisplayPort 1.4 / 1 x USB-C (DP Alternative) / 2 x HDMI 2.1
USB Ports1 x USB 3.2 Upstream / 2 x USB 3.2 Downstream
Headphone3.5mm headphone jack
Stand AdjustmentsHeight, Pivot, Swivel, Tilt
Built-in SpeakersNo
Built-in WebcamNo
VESA Compatibility - Mountable100 x 100mm
Poids d’expédition6.80 kg
Dimensions du colis673 × 529 × 168 mm

Autres versions de ce modèle

3 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

Will my graphics card handle the 240Hz refresh rate at 2560 x 1440?

Any GPU with DisplayPort 1.4 or HDMI 2.1 can drive 240Hz at QHD; check your card’s port version to be sure.

Does the stand allow the screen to sit low enough for my desk setup?

The stand offers height adjustment, tilt, swivel and pivot so you can set the exact viewing height and angle you need.

What does the 1300nits peak brightness mean for HDR gaming?

It enables VESA DisplayHDR True Black 400 performance — deep blacks and bright highlights hit 1300nits in small specular areas for strong contrast.

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