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Black 34 inch curved OLED gaming monitor on adjustable stand

LG Electronics

LG Electronics 34GX900A-B 34" 240Hz OLED curved gaming monitor

SKU CH-9FH0-6Q11G MPN 34GX900A-B

A 34-inch curved OLED panel delivers 3440 x 1440 resolution at 240 Hz with a 0.03 ms response time and 98.5% DCI-P3 colour

  • Cabinet ColorBlack
  • Screen Size34"
  • PanelOLED
  • Display TypeWQHD
  • Adaptive Sync TechnologyFreeSync Premium Pro & G-Sync Compatible
  • Resolution3440 x 1440

Size

  • 34"
  • 45"

Struck-through versions exist but are not stocked here.

  • OLED panel delivers perfect blacks with 1,500,000:1 contrast ratio
  • 240Hz refresh rate and 0.03ms response eliminate motion blur
  • 3440x1440 resolution across 21:9 curve widens field of view
  • 5% DCI-P3 colour gamut with HDR TrueBlack 400 for accurate colour
  • USB-C 65W power delivery simplifies desk connectivity

UltraWide OLED for immersive gaming

The 34-inch UWQHD OLED panel delivers a 3440 x 1440 resolution across a 21:9 aspect ratio. Its 800R curvature matches natural sight for a consistent field of view. The display covers 98.5% of the DCI-P3 colour space with 1.07 billion colours for vivid, accurate visuals.

Bright OLED with low heat and silent operation

LG WOLED with Micro Lens Array+ technology provides up to 37.5% brighter SDR output at 275 nits typical brightness. Peak HDR brightness reaches 1300 nits at 1.5% APL under HDR TrueBlack 400 certification. The self-lit panel runs cool and completely silent without any moving parts.

240Hz refresh rate with near-instant response

A 240Hz refresh rate pairs with a 0.03ms response time to eliminate motion blur in fast-paced titles. NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro support keep gameplay tear-free. USB Type-C with 65W Power Delivery, two HDMI 2.1 ports and one DisplayPort handle high-bandwidth signals.

Highlights

  • OLED panel delivers perfect blacks with 1,500,000:1 contrast ratio
  • 240Hz refresh rate and 0.03ms response eliminate motion blur
  • 3440x1440 resolution across 21:9 curve widens field of view
  • 5% DCI-P3 colour gamut with HDR TrueBlack 400 for accurate colour
  • USB-C 65W power delivery simplifies desk connectivity

Specifications

BrandLG
SeriesUltraGear
Model34GX900A-B
Part Number34GX900A-B
Cabinet ColorBlack
Screen Size34"
PanelOLED
Display TypeWQHD
Adaptive Sync TechnologyFreeSync Premium Pro & G-Sync Compatible
Resolution3440 x 1440
Viewing Angle178° (H) / 178° (V)
Aspect Ratio21:9
Brightness275 cd/m2
Contrast Ratio1,500,000:1
Response Time0.03 ms
Color GamutDCI-P3 98.5% (CIE1976)
Display Colors1.07 Billion
Monitor Pixel Density0.266mm
Refresh Rate240Hz
HDR StandardHDR10
VESA Certified DisplayHDRDisplayHDR True Black 400
Curved Surface ScreenCurved
Curvature Radius800R
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 Type-C / 2 x USB 3.0 Type-A Downstream
Headphone4-Pole(Sound+Mic)
Power Supply100 - 240 VAC, 50/60Hz
Power ConsumptionPower Save/Sleep Mode (Max): Less than 0.5W
DC Off (Max): Less than 0.3W
Stand AdjustmentsHeight, Swivel, Tilt
Built-in Speakers2 x 7W
Built-in WebcamNo
VESA Compatibility - Mountable100 x 100mm
Dimensions18.5"-22.9" x 30.9" x 11.5" with stand
14.1" x 30.9" x 6.6" without stand
Weight22.9 lbs. with stand
13.7 lbs. without stand
Package ContentsDisplay Port Cable
HDMI Cable
USB Type-C Cable
Shipping weight15.47 kg
Package size914 × 546 × 292 mm

Other versions of this model

1 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the 800R curve fit comfortably on a typical desk without feeling too aggressive?

The 800R curvature is designed to match a natural 90-degree field of view at normal sitting distance, so it wraps around your vision without requiring an unusually deep desk.

Can a single cable charge my laptop and drive the 3440x1440 240Hz signal?

Yes, the USB-C port supplies up to 65W power delivery while carrying video, so most ultrabooks can charge and run the full resolution and refresh rate over one cable.

Do I need a specific graphics card to use the adaptive sync features?

The monitor works with both AMD FreeSync Premium Pro and NVIDIA G-Sync Compatible, so any modern GPU supporting either standard will enable variable refresh rate automatically.

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