39 Inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor

1/4
Logo Image
1/4
LG Logo
39 Inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor 39GX900A-B
LG UltraGear™ Oled Up to 1300 nits (APL 1.5%) peak brightness UltraGear's Brightest OLED
LG UltraGear™ OLED
Outrageous OLED Gaming Speed
LG UltraGear™ FreeSync Premium Pro and G-Sync Compatibility
Seamless frame sync for stutter-free gaming
New
39 Inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor 39GX900A-B

39 Inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor

39GX900A-B

Key features

  • 39” UltraGear OLED: a 21:9 curved WQHD display that’s built for battle
  • Outrageous OLED gaming speed at up to 240Hz and 0.03ms response time
  • Seamless frame sync with FreeSync™ Premium Pro and G-SYNC® for stutter-free gaming.
  • Stunning and bright OLED visuals with rich color, deep blacks, and 1.5M:1 contrast
  • The 39" UltraGear OLED's steep and dramatic 800R curve surrounds you in the action
  • Console or PC connectivity: HDMI 2.1,  DisplayPort 1.4 and USB Type-C¹

Specifications

  • Picture Quality
  • Special Features
  • Input/Output
  • Stand
  • Sound
  • Power
  • Dimensions/Weights
  • Cabinet/Accessories
  • Warranty
  • See All
  • Picture Quality
    Color Depth (Number of Colors)
    1.07B
    Aspect Ratio
    21:9
    Brightness (Typical, Minimum)
    (Typ.) 275 cd/m² (Min.) 250 cd/m²
    Color Gamut (Typ.)
    DCI-P3 98.5% (CIE1976)
    Contrast Ratio
    1500000:1 (Typ.)
    Display Type
    OLED
    Pixel Pitch (mm)
    0.266 x 0.266
    Refresh Rate
    240Hz
    Resolution
    3440 x 1440
    Response Time (GTG)
    0.03ms (GtG)
    Screen Size
    39"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Picture Quality
    Color Depth (Number of Colors)
    1.07B
    Aspect Ratio
    21:9
    Brightness (Typical, Minimum)
    (Typ.) 275 cd/m² (Min.) 250 cd/m²
    Color Gamut (Typ.)
    DCI-P3 98.5% (CIE1976)
    Contrast Ratio
    1500000:1 (Typ.)
    Display Type
    OLED
    Pixel Pitch (mm)
    0.266 x 0.266
    Refresh Rate
    240Hz
    Resolution
    3440 x 1440
    Response Time (GTG)
    0.03ms (GtG)
    Screen Size
    39"
    Viewing Angle
    178˚(R/L), 178˚(U/D)
    Special Features
    RGB LED Lighting
    Hexagon Lighting
    Curvature
    800R
    AMD FreeSync Premium Pro
    Yes
    AMD FreeSync
    Yes
    DTS Headphone:X
    Yes
    VESA Adaptive Sync
    Yes
    Headphone 4-Pole (Sound+Mic)
    Yes
    LG Switch
    Yes
    Auto Input Switch
    Yes
    Black Stabilizer®
    Yes
    Crosshair®
    Yes
    Dynamic Action Sync®
    Yes
    Factory Calibration
    Yes
    FPS Counter
    Yes
    HDR Effect
    Yes
    HDR10
    Yes
    NVIDIA G-Sync™
    Yes
    PBP (Picture by Picture)
    Yes
    PIP (Picture in Picture)
    Yes
    Reader Mode
    Yes
    Smart Energy Saving
    Yes
    User Define Key
    Yes
    VESA DisplayHDR™
    DisplayHDR™ TRUE BLACK 400
    Input/Output
    USB Down-stream
    Yes (2ea/ver3.0)
    DisplayPort
    1
    USB Type-C
    1
    HDMI
    2
    HDMI Version 2.1
    Yes
    DP Version
    1.4
    Headphone Out
    Yes
    USB-C (Data Transmission)
    Yes
    USB-C (Power Delivery)
    65 W
    Stand
    Display Position Adjustments
    Height, Swivel, Tilt
    Wall Mount Size (mm)
    100 x 100
    Sound
    Speaker
    Yes
    Power
    DC Off (Max)
    Less than 0.3W
    Input
    100~240V (50/60Hz)
    Power Save/Sleep Mode (Max)
    Less than 0.5W
    Type
    External Power(Adapter)
    Dimensions/Weights
    Shipping Dimensions (WxHxD)
    38.8" × 13.3" × 21.7"
    Shipping Weight
    38.6 lbs
    With Stand (WxHxD)
    34.9" × 23.9" × 12.7" (Up) 34.9" × 19.5" × 12.7" (Down)
    With Stand Weight
    25.2 lbs
    Without Stand (WxHxD)
    34.9" × 15.9" × 7.8"
    Without Stand Weight
    16.1 lbs
    Cabinet/Accessories
    USB Type-C Cable
    Yes
    Display Port Cable
    Yes
    HDMI Cable
    Yes
    Warranty
    Country of origin
    China
    Limited Warranty
    2 Year Parts & Labor
    UPC
    195174127124
    Features

    The 240Hz OLED gaming monitor that’s ahead of the (800R) curve

    The 39” WQHD OLED with a steep 800R curve and up to 1300 nits (APL 1.5%) peak brightness pulls you deep into the action, while a 240Hz refresh rate and 0.03ms response time keep gameplay insanely fast and smooth.

    LG UltraGear™ OLED GX9

    Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed

    Game at the speed of OLED with an ultra-fast 240Hz and near instantaneous 0.03ms (GtG) response time. The faster speed lets you respond quickly to opponents and enjoy smoother scenes with less lag or ghosting.

    Up to 240Hz & 0.03ms – Outrageous OLED Gaming Speed

    Ultimate Frame Sync: FreeSync™ Premium Pro & G-SYNC® Compatible

    Say goodbye to screen tearing and stutter. With AMD FreeSync™ Premium Pro and NVIDIA® G-SYNC® compatibility, this OLED monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming.

    Ultimate Frame Sync: FreeSync™ Premium Pro & G-SYNC® Compatible

    Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW

    Get lost in vivid visuals with OLED technology, delivering exceptional brightness, up to 98.5% of DCI-P3 color coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400. Every gaming scene pops with deep blacks, brilliant highlights, and cinematic color.

    Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW

    The 800R Curve: Surround Yourself in the Action

    See and feel the action all around you with the dramatic 800R curve. This steep curvature extends your periphery, pulling you deeper into the game and making the action more intense.

    The 800R Curve: Surround Yourself in the Action

    Low Glare, More Focus: Play Without Distractions

    Stay in the zone with an OLED screen that’s designed to minimize glare and reflections. The anti-glare surface reduces light distractions, so you can keep your attention where it matters—on every move, every target, and every win.

    Low Glare, More Focus: Play Without Distractions

    Unlock Your Potential with Advanced Gaming Features

    Dynamic Action Sync reduces input lag for real-time response

    Black Stabilizer brightens dark scenes to see what's hidden

    FPS Counter shows your real-time frame rate

    Crosshair enhances precision for deadly accuracy

    Unlock Your Potential with Advanced Gaming Features

    OLED Protection: 2-Year Limited Warranty & Panel Care Tools

    Rest easy knowing your OLED monitor is built to last. The 2-year limited warranty covers key components, including the OLED panel. And OLED Care tools such as pixel cleaning keep your display sharp, for reliable top-tier performance. Please see Warranty Information on this page for all warranty details.

    OLED Protection: 2-Year Limited Warranty & Panel Care Tools

    Serious Connectivity for Serious Gamers

    For next gen console gaming or PC gaming, with HDMI 2.1, DisplayPort 1.4 and USB Type-C (65W power delivery), UltraGear's versatile connectivity enables high-resolution graphics, and fast, fluid gaming.1

    Serious Connectivity for Serious Gamers

    Customize Your Screen View with the Switch App

    The Switch app transforms your screen into a multitasking hub for work, gaming, and streaming. Effortlessly split the screen into up to 6 sections, customize display layouts, or launch video calls with a single hotkey.2

    Customize Your Screen View with the Switch App

    Battlestation upgrade Adjustable to Gamer Specs

    Go big with the virtually borderless 39” OLED screen. UltraGear's sleek, slim design offers adjustable height, tilt, and swivel control for your ideal view, while RGB hexagonal backlighting sets the mood for your battlestation.

    Battlestation upgrade Adjustable to Gamer Specs
    For owners

    Warranty Information

    1Graphics card that supports DisplayPort 1.4 or HDMI 2.1 are required to achieve up to 240Hz refresh rate support. Graphics card sold separately.

    2Software installation required. Visit Support on LG.com to download.


    Images may be simulated and dramatized for illustrative purposes. Actual features, functionality, and other product specifications may differ and are subject to change without notice. Prices, promotions, and availability may vary by model, store, and online. Prices subject to change without notice. Quantities are limited. Check with your local retailers for their final price and availability.

    USA, English

    Social Support

    • /LGUSSupport
    • @lgussupport


    BusinessPrivacyDo Not Sell or Share My Personal InformationTerms of UseTerms of PurchasePatentAccessibility HelpSite Map
    LG Logo Copyright © 2009-2025 LG Electronics. All Rights Reserved
    LG LogoLG Jeong-Do Management Ethics Hotline