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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

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

Size 34"

  • 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.

How it compares

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

Price $919.99
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 name34GX90SA-W
Part number34GX90SA-W
Case colorWhite
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
Screen finishLow Glare
Display formatWQHD
Variable refresh rateFreeSync Premium & G-Sync Compatible
Viewing angles178° (H) / 178° (V)
Screen ratio21:9
Contrast1,500,000:1
Colors displayed1.07 Billion
Pixel pitch0.303 mm x 0.303 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
Headphone jack3.5 mm headphone jack
Power
Power drawPower Save/Sleep Mode (Max): Less than 0.5 W
DC Off (Max): Less than 0.5 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 weight15.97 kg
Package size914 × 533 × 305 mm
Compatibility
Supported OSWebOS

Other versions of this model

1 more in the same range

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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