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White 34 inch curved OLED gaming monitor on adjustable stand

LG Electronics

LG Electronics 34GX90SA-W 34" 240Hz OLED gaming monitor

SKU CH-3MYV-0GWVE MPN 34GX90SA-W

A 34-inch 21:9 curved WQHD OLED gaming monitor with a 240Hz refresh rate, 0.03ms response time, FreeSync Premium and G-Sync compatibility, webOS smart platform and an 800R curve

  • Cabinet ColorWhite
  • OS SupportwebOS
  • Screen Size34"
  • Glare ScreenLow Glare
  • PanelOLED
  • Display TypeWQHD

Size

  • 34"
  • 39"

Struck-through versions exist but are not stocked here.

  • 21:9 curved WQHD display wraps the action around you
  • 240 Hz refresh rate and 0.03 ms response keep motion razor-sharp
  • OLED panel delivers 1.5M:1 contrast with deep blacks and 98.5 % DCI-P3 colour
  • webOS 24 streams Netflix, Prime Video and 300+ LG Channels without a PC
  • HDMI 2.1, DisplayPort 1.4 and USB-C connect console and PC in one setup

34-inch 240Hz OLED curved gaming monitor

This 34-inch UltraGear OLED display combines a 3440 x 1440 WQHD resolution with a 240Hz refresh rate and 0.03ms response time. The 800R curvature wraps the 21:9 panel around the viewer for immersive play. Built-in webOS provides direct access to streaming apps and cloud gaming services without a PC.

Who this suits and who should look elsewhere

Competitive gamers who need maximum motion clarity and HDR impact at 240Hz will benefit from the OLED speed and 1,500,000:1 contrast. Users requiring sustained full-screen brightness above 275 cd/m² or those who prefer a flat panel for productivity tasks should consider other options.

The spec that decides fit

The 800R curve radius defines the viewing experience; it delivers deep immersion for gaming but can distort straight lines in desktop work. If the curve matches your use case, the 240Hz OLED panel, FreeSync Premium and G-Sync Compatible support, and webOS smart platform complete the package.

Highlights

  • 21:9 curved WQHD display wraps the action around you
  • 240 Hz refresh rate and 0.03 ms response keep motion razor-sharp
  • OLED panel delivers 1.5M:1 contrast with deep blacks and 98.5 % DCI-P3 colour
  • webOS 24 streams Netflix, Prime Video and 300+ LG Channels without a PC
  • HDMI 2.1, DisplayPort 1.4 and USB-C connect console and PC in one setup

Specifications

BrandLG
SeriesUltraGear
Model34GX90SA-W
Part Number34GX90SA-W
Cabinet ColorWhite
OS SupportwebOS
Screen Size34"
Glare ScreenLow Glare
PanelOLED
Display TypeWQHD
Adaptive Sync TechnologyFreeSync Premium & 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
Display Colors1.07 Billion
Monitor Pixel Density0.303mm x 0.303mm
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
Headphone3.5mm headphone jack
Power Supply100 - 240 VAC, 50/60Hz
Power ConsumptionPower Save/Sleep Mode (Max): Less than 0.5W
DC Off (Max): Less than 0.5W
Stand AdjustmentsHeight, Swivel, Tilt
Built-in Speakers2 x 7W
Built-in WebcamNo
VESA Compatibility - Mountable100 x 100mm
FeaturesHDR Effect
Factory Calibrated
VRR
Auto Brightness
Reader Mode
Black Stabilizer
Dynamic Action Sync
Crosshair
FPS Counter
User Define Key
Smart Energy Saving
PIP
2PBP
RGB LED Lighting: Hexagon Lighting
LG Switch
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
Shipping weight15.97 kg
Package size914 × 533 × 305 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

Which video outputs on my graphics card will drive the 34GX90SA-W at its full 240 Hz and 3440 x 1440 resolution?

Use the DisplayPort 1.4 or HDMI 2.1 ports on your GPU; both carry the bandwidth needed for the panel's 240 Hz refresh rate and WQHD resolution.

Will my older GPU that only supports FreeSync still benefit from the monitor's adaptive sync range?

Yes — the display is FreeSync Premium certified and G-Sync Compatible, so any GPU with FreeSync support will deliver tear-free gaming across the full variable refresh range.

How can I confirm the monitor is actually running at 240 Hz and HDR after I connect it?

Open the on-screen display information menu; it shows the current refresh rate and HDR status, and Windows display settings will list 240 Hz as the active mode.

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