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Overview

Immerse yourself in battles like never before with the LG UltraGear gaming monitor. It has a 45-inch WQHD OLED display with an 800R curve that pulls you into the action. Its peak brightness and deep contrast make every scene come alive. At 240Hz with a 0.03ms response time, gameplay feels incredibly smooth. With webOS, enjoy streaming apps and cloud games.

LG UltraGear 45" WQHD 240Hz 0.03ms GTG Curved OLED G-Sync FreeSync Gaming Monitor (45GX90SA-B) - Black

Model: 45GX90SA-B
Web Code: 19290022
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Manufacturer's Warranty

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For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • LG Monitor and Stand
  • Power Adapter with Cord (Black)
  • HDMI 2.1 cable (Black)
  • Display Port 2.1 cable (Black)
  • USB-C Cable (Black)
  • Remote Control
  • 45-inch monitor with 800R curve immerses you in the action
  • 1440p WQHD (3440 x 1440) display and a 21:9 aspect ratio provide immersive gaming experience
  • 0.03ms GTG response time and 240Hz refresh rate let you experience blazing OLED speed for ultra-smooth, razor-sharp gameplay
  • FreeSync Premium and G-SYNC compatibility offer seamless frame synchronization for stutter-free gaming
  • OLED with 1.5M:1 contrast ratio produces stunning and bright visuals with rich colours, deep blacks, and remarkable image clarity
  • With 1,300nits peak brightness (APL 1.5%), enjoy ultra-bright visuals that enhance contrast, depth, and detail
  • 178-degree horizontal and vertical viewing angles offer consistent colours and sharp visuals from virtually any position
  • webOS with AI-driven visuals and audio ensures an improved gaming experience and easy access to popular streaming apps and cloud gaming services
  • One Display Port 2.1, two HDMI 2.1, one USB-C with 65W PD, two USB-A 3.0, one LAN port, and one Headphone four-pole (sound + mic) provide versatile connectivity
Product Condition
Brand New
ENERGY STAR certified
No

Display

Screen Size
45 in
Resolution
1440p WQHD
Native Resolution
3440 x 1440
Aspect Ratio
21:9
Display Type
LED
Touchscreen
No
Viewing Angle
178º(R/L) / 178º(U/D)
Response Time (Grey-to-Grey)
0.03 ms
Refresh Rate
240 Hz
Brightness
275 cd/m²
Dynamic Contrast Ratio
1500000:1
Static Contrast Ratio
1200000:1
Colour Gamut
DCI-P3 98.5% (CIE1976)
3D Video Support Built-in
No
Built-In TV Tuner
No

Panel

Panel Technology
OLED
Panel Type
OLED
Curved
Yes

Audio

Built-in Speakers
Yes
Speaker Output Power
20 W

Inputs/Outputs

Input/Output Types
1 x Display Port 2.1; 2 x HDMI 2.1; 1 x USB-C with 65W PD; 2 x USB-A 3.0; 1 x LAN Port; 1 x Headphone 4-pole (sound + mic)
Built-In Webcam
No
DVI-D Support
No
HDCP Support
Yes

Power

Typical Consumption
66 W
Stand-By Consumption
0.3 W
Auto Off
Yes
Energy Saving Mode
Yes

Stand/Mount Features

Tilt Adjustment
Yes
Swivel Adjustment
Yes
Height Adjustment
Yes
Rotate to Portrait
No
VESA Mountable
Yes
VESA Sizes Supported
100 x 100 mm
Other Features
Smart Gaming with webOS; RGB LED Hexagon Lighting -back of panel; PBP and PIP; LG Switch; Live Colour Low Blue Light; Smart Energy Saving

Physical Features

Colour
Black
Dimensions with Stand (cm)
99.3 (W) x 66.2 (H) x 33.7 (D) cm
Dimensions with Stand (in)
39.09 (W) x 26.06 (H) x 13.27 (D) in
Dimensions without Stand (cm)
99.3 (W) x 45.7 (H) x 21.8 (D) cm
Dimensions without Stand (in)
39.09 (W) x 17.99 (H) x 8.58 (D) in
Weight (With Stand)
13.5 kg
Weight (Without Stand)
8.89 kg

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Information about the manufacturer’s availability guarantee can be found .