LG 39GX90SA-W.AUS Review: 240Hz OLED Speed with webOS for Streaming
The LG 39GX90SA-W.AUS is a feature-packed ultrawide gaming monitor that delivers stunning OLED visuals, incredibly fast refresh rates, and a smart platform for streaming, though its size and connectivity requirements demand consideration.
By Elvis Dicki
Updated October 20, 2026
The LG 39GX90SA-W.AUS is a 39-inch ultrawide curved OLED gaming monitor designed to dominate both competitive play and immersive entertainment. It targets serious gamers and multimedia users who demand the absolute best in motion clarity, contrast, and color, wrapped in a versatile smart package. This monitor combines a blistering 240Hz refresh rate with the perfect blacks of OLED technology and LG’s webOS platform for streaming, creating an all-in-one centerpiece for a high-end setup.
With a WQHD (3440 x 1440) resolution on a steep 800R curve, adaptive sync for tear-free gaming, and a suite of gamer-focused features, the LG 39GX90SA-W.AUS aims to be a top-tier choice. The bottom line: it’s a premium display that excels in delivering breathtaking speed and image quality for gaming, but its smart features and large footprint make it equally compelling for users who want a single screen for work, play, and streaming.
LG 39GX90SA-W 39" UltraGear OLED Curved
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
LG 39GX90SA-W.AUS at a Glance
| Specification | Detail |
|---|---|
| Screen Size & Type | 39-inch Curved OLED |
| Resolution | 3440 x 1440 (WQHD) |
| Aspect Ratio | 21:9 |
| Refresh Rate | 240 Hz |
| Response Time | 0.03ms (GtG) |
| Curvature | 800R |
| Adaptive Sync | AMD FreeSync Premium, NVIDIA G-SYNC Compatible |
| HDR | DisplayHDR True Black 400, HDR10 |
| Key Features | webOS with streaming apps, USB-C with 65W PD, Anti-Glare screen |
| Warranty | 2-Year Manufacturer Warranty |
Design and Build
The LG 39GX90SA-W.AUS makes a striking first impression with its 39-inch ultrawide form factor and pronounced 800R curvature. The white finish and virtually borderless design give it a modern aesthetic that can complement various gaming setups. The monitor is substantial, measuring approximately 34.95 inches wide and weighing 25.2 pounds, so ensuring you have adequate desk space is a prerequisite. The stand offers ergonomic flexibility with height, tilt, and swivel adjustments, allowing users to find a comfortable viewing position. For those preferring a cleaner setup, the monitor is VESA mount compatible. An anti-glare screen finish is employed to minimize distracting reflections during intense gaming sessions.
Performance and Features
Visual Performance and Gaming
This is where the LG 39GX90SA-W.AUS truly shines. The OLED panel is the star, delivering a 1.5 million:1 contrast ratio for inky blacks and brilliant highlights. It covers up to 98.5% of the DCI-P3 color gamut, ensuring vibrant, cinematic colors. Combined with a peak brightness of 1300 nits and VESA DisplayHDR True Black 400 certification, HDR content and games look exceptionally dynamic. For competitive gaming, the 240Hz refresh rate and near-instantaneous 0.03ms gray-to-gray response time are critical, virtually eliminating motion blur and ghosting. Features like Dynamic Action Sync reduce input lag, while Black Stabilizer helps reveal details in dark game scenes.
Connectivity and Smart Features
Connectivity is comprehensive. The monitor includes two HDMI ports, a DisplayPort, and a USB-C port that supports display input and 65W power delivery, ideal for connecting a laptop. There are also USB 3.0 ports for peripherals. A major differentiator is the integration of LG’s webOS smart platform. This provides built-in access to popular streaming services like Netflix, Prime Video, Disney+, and HBO Max, as well as over 300 free LG Channels. Furthermore, it allows direct access to cloud gaming services such as NVIDIA GeForce NOW and Amazon Luna, meaning you can game without a console or PC connected.
Sync Technology and AI Tools
To ensure smooth gameplay, the monitor supports both AMD FreeSync Premium and is NVIDIA G-SYNC Compatible, effectively eliminating screen tearing and stuttering across a wide range of frame rates when used with compatible graphics cards. The webOS platform includes AI-powered tools for customization: AI Picture and Dynamic Tone Mapping enhance visuals, AI Personalized Picture Wizard tailors settings, and AI Sound optimizes audio output for different content.
Setup, Support and Ownership
Setup is straightforward, with the necessary cables, including DisplayPort, HDMI, USB-C, and power, included in the box. To fully utilize the 240Hz refresh rate at the native WQHD resolution, users will need a graphics card that supports DisplayPort 1.4 or HDMI 2.1. The monitor’s smart features require a stable internet connection. LG provides a 2-year limited warranty that specifically covers the OLED panel, which is a significant point of assurance for this technology. Built-in OLED Care tools, like pixel cleaning, are included to help maintain the panel’s performance over time. The monitor’s power consumption is rated at 67 watts.
What Owners Say
Owner feedback for the LG 39GX90SA-W.AUS is generally very positive, reflected in its high rating. Users consistently praise the stunning image quality, with particular emphasis on the OLED contrast, color vibrancy, and the immersive effect of the 800R curvature. The high 240Hz refresh rate is frequently highlighted as a game-changer for smoothness in fast-paced titles. The convenience of having webOS for streaming and cloud gaming directly on the monitor is also a popular feature. Some considerations mentioned by users relate to ensuring their hardware can drive the monitor to its full potential and the desk space required for the large ultrawide footprint.
Pros and Cons
Pros
- Exceptional OLED picture quality with perfect blacks and wide color gamut.
- Extremely fast 240Hz refresh rate and near-instant response time.
- Versatile webOS platform for streaming and cloud gaming.
- Effective AMD FreeSync Premium and NVIDIA G-SYNC compatibility.
- Immersive 800R curved ultrawide design.
- Useful USB-C port with 65W power delivery.
Cons
- Requires high-end graphics card (DP 1.4/HDMI 2.1) for full 240Hz capability.
- Large 39-inch size demands a deep or wide desk.
- Smart features are dependent on an internet connection.
- Anti-glare coating may not be preferred by all users.
- Premium price point compared to non-OLED ultrawides.
Who Should Buy It (and Who Should Skip It)
The LG 39GX90SA-W.AUS is an ideal choice for competitive PC gamers and enthusiasts who want the absolute best motion clarity and image fidelity that OLED technology can provide. It’s also perfect for multimedia power users who want a single, stunning display for gaming, productivity, and streaming entertainment via webOS, eliminating the need for a separate smart TV or streaming device. Users with modern gaming consoles or high-end PCs that can output WQHD at high frame rates will get the most out of this monitor.
Conversely, users with limited desk space should carefully measure before purchasing. Those with older graphics hardware that cannot support DisplayPort 1.4 or HDMI 2.1 will not be able to use the monitor at its maximum 240Hz refresh rate. If your primary use is standard office work or you have no interest in the streaming features, a more conventional, less expensive monitor might be a better fit. For more insights on choosing the right display for your needs, explore our guide to the best ultrawide monitors.
Final Verdict
The LG 39GX90SA-W.AUS is a compelling and feature-rich monitor that successfully blends top-tier gaming performance with smart entertainment convenience. Its OLED panel delivers breathtaking contrast and color, while the 240Hz refresh rate ensures buttery-smooth gameplay for competitive titles. The inclusion of webOS is a significant value-add, transforming the monitor into an entertainment hub. The 800R curve enhances immersion, making it excellent for both gaming and cinematic content.
While it requires compatible hardware and ample space, its strengths are undeniable. For gamers and users seeking an all-in-one visual powerhouse that excels in speed, image quality, and versatility, the LG 39GX90SA-W.AUS is a standout option that justifies its position in the premium monitor market. It’s a significant investment that pays off in daily use, whether you’re securing a victory in a fast-paced shooter or getting lost in a movie. For those considering a curved display, our expert picks for the best ultrawide curved monitors offer further comparison.
FAQs
What cables are needed to run this monitor at 240Hz?
To achieve the full 240Hz refresh rate at the native 3440×1440 resolution, you must use either a DisplayPort 1.4 cable or an HDMI 2.1 cable. The monitor comes with the necessary cables in the box, but your graphics card must also support these standards. Using older cable standards or ports will limit the maximum refresh rate.
Can you use this monitor without a computer?
Yes, thanks to the built-in webOS platform. You can connect the monitor to the internet via Wi-Fi or Ethernet and directly access streaming apps like Netflix and Disney+, as well as cloud gaming services like NVIDIA GeForce NOW. This allows you to watch content and play games without any PC or console connected.
Is the LG 39GX90SA-W.AUS good for console gaming?
It can be a great experience, particularly with modern consoles that support 1440p output and high refresh rates. The monitor’s AMD FreeSync Premium and G-SYNC compatibility help reduce screen tearing. However, to maximize its potential, ensure your console supports the monitor’s resolutions and refresh rates over HDMI 2.1.
How does OLED technology affect gaming and longevity?
OLED provides superior contrast with perfect blacks, leading to more vibrant and realistic images. For gaming, this means incredible detail in both dark and bright scenes. Regarding longevity, LG includes a 2-year warranty that covers the OLED panel and provides built-in Panel Care tools, like pixel cleaning, to help prevent image retention and maintain the display over time.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.