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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

  • Screen size34 in (86.4 cm)
  • Display resolution3440 × 1440
  • Refresh frequency240 Hz
  • Panel typeOLED
  • Pixel response time0.03 ms
  • HDR formatHDR10

Size 34"

  • 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.

How it compares

Measured against everything we stock in Monitors for Gamers, at today’s prices. Recalculated every night.

Price $845.99
Pricier than about 91% of the 839 comparable items (median $189.99).
Screen size 34 in (86.4 cm)
Higher than about 90% of the 814 comparable items (median 27 in).
Refresh frequency 240 Hz
Higher than about 70% of the 735 comparable items (median 180 Hz).

Specifications

Product
Brand nameLG
Product lineUltraGear
Model name34GX900A-B
Part number34GX900A-B
Case colorBlack
Display
Screen size34 in (86.4 cm)
Display resolution3440 × 1440
Refresh frequency240 Hz
Panel typeOLED
Pixel response time0.03 ms
HDR formatHDR10
Image brightness275 cd/m2
Screen curvatureCurved
Display formatWQHD
Variable refresh rateFreeSync Premium Pro & G-Sync Compatible
Viewing angles178° (H) / 178° (V)
Screen ratio21:9
Contrast1,500,000:1
Color gamut coverageDCI-P3 98.5% (CIE1976)
Colors displayed1.07 Billion
Pixel pitch0.266 mm
DisplayHDR certificationDisplayHDR True Black 400
Audio & video
Integrated speakers2 × 7 W
Integrated webcamNo
Ports & slots
HDMI ports2 x HDMI 2.1
DisplayPort connectors1 x DisplayPort 1.4
Video connectors1 x DisplayPort 1.4 / 1 x USB-C (DP Alternative) / 2 x HDMI 2.1
USB connections1 x USB Type-C / 2 x USB 3.0 Type-A Downstream
Headphone jack4-Pole(Sound+Mic)
Power
Power drawPower Save/Sleep Mode (Max): Less than 0.5 W
DC Off (Max): Less than 0.3 W
Power supply100–240 VAC, 50/60 Hz
Size & build
Stand adjustabilityHeight, Swivel, Tilt
VESA mounting pattern100 × 100 mm
Product dimensions18.5 in-22.9 in × 30.9 in × 11.5 in with stand
14.1 in × 30.9 in × 6.6 in without stand
Product weight22.9 lb with stand
13.7 lb without stand
Shipping weight15.47 kg
Package size914 × 546 × 292 mm
In the box
In the boxDisplay Port Cable
HDMI Cable
USB Type-C Cable

Other versions of this model

1 more in the same range

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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