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White curved 39-inch OLED gaming monitor on adjustable stand

LG Electronics

LG Electronics 39GX90SA-W 39" OLED 240Hz gaming monitor

SKU CH-5DWV-0VMR4 MPN 39GX90SA-W

A 39-inch curved OLED gaming monitor with 240 Hz refresh rate, 0.03 ms response time and built-in webOS streaming

  • Cabinet ColorWhite
  • OS SupportwebOS
  • Screen Size39"
  • Glare ScreenLow Glare
  • PanelOLED
  • Display TypeWQHD

Size

  • 34"
  • 39"

Struck-through versions exist but are not stocked here.

  • Deep immersion from steep 800R curve on 39" ultrawide
  • Ultra-smooth 240Hz refresh with 0.03ms response for fast gaming
  • Tear-free play via FreeSync Premium and G-SYNC compatible
  • Rich streaming and cloud gaming through built-in webOS platform
  • Vivid HDR detail with 1.5M:1 contrast and 1300-nit peak brightness

39-inch 800R Curved OLED Gaming Monitor

The LG UltraGear 39GX90SA-W combines a 39-inch WQHD OLED panel with an 800R curve, 240Hz refresh rate and 0.03ms response time. Built-in webOS provides direct access to streaming apps and cloud gaming services without a separate PC or console. The white cabinet includes a height-adjustable, swivel and tilt stand.

Suits Competitive and Immersive Gamers

Players who want ultra-fast motion clarity on a wide 21:9 curved OLED will benefit from the 240Hz panel and 0.03ms GtG response. FreeSync Premium and G-Sync Compatible support covers both AMD and NVIDIA GPUs. Buyers needing 4K resolution, higher typical brightness than 275 cd/m², or a flat screen should consider other models.

800R Curvature Defines the Viewing Experience

The 800R curve wraps the 3440 x 1440 panel tightly around the viewer’s field of vision, creating a more immersive feel than shallower curves or flat panels. This curvature radius is the key specification that determines whether the monitor matches the user’s preferred viewing distance and desk setup.

Highlights

  • Deep immersion from steep 800R curve on 39" ultrawide
  • Ultra-smooth 240Hz refresh with 0.03ms response for fast gaming
  • Tear-free play via FreeSync Premium and G-SYNC compatible
  • Rich streaming and cloud gaming through built-in webOS platform
  • Vivid HDR detail with 1.5M:1 contrast and 1300-nit peak brightness

Specifications

BrandLG
SeriesUltraGear
Model39GX90SA-W
Part Number39GX90SA-W
Cabinet ColorWhite
OS SupportwebOS
Screen Size39"
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
DimensionsWith Stand: 34.95" W x 23.85" H x 12.71" D.
Without Stand: 34.9" W x 15.9" H x 7.8" D.
WeightWeight with Stand: 25.2 lbs.
Weight without Stand: 16.1 lbs.
Shipping weight17.26 kg
Package size978 × 544 × 333 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 on a standard desk?

The 800R curve is quite steep; allow plenty of desk depth so the screen edges stay in view.

Can I use the 240 Hz refresh rate with a console?

Yes, the monitor supports 240 Hz over HDMI 2.1 and is G-Sync Compatible and FreeSync Premium for tear-free console play.

Does the built-in webOS replace a PC for streaming?

webOS24 runs Netflix, Prime Video, Disney+, 300+ LG Channels and cloud services like GeForce NOW, so you can stream and cloud-game without a computer.

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