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Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 45" WQHD curved OLED monitor. UltraGear Fact: The 45-inch 21:9 45” UltraGear OLED monitor delivers more screen area than a 49-inch 32:9 aspect ratio screen. The sweeping, steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and pivot adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.
Q: Does this monitor have built-in speakers?
A: Yes, the monitor has integrated speakers.
Q: Is this monitor compatible with G-SYNC?
A: Yes, this monitor is compatible with NVIDIA G-SYNC technology.
Q: How does the Black Stabilizer feature enhance gameplay?
A: The Black Stabilizer feature brightens dark scenes, allowing you to see hidden details and gain an advantage in games.
Q: Which streaming services are accessible directly through this monitor?
A: You can access Netflix, Prime Video, the Apple TV app, Disney+, HBO Max, and over 300 free LG Channels directly on the monitor.
Q: What is the curve of this monitor?
A: The LG monitor has an 800R curve.
Q: What type of display does this LG monitor use?
A: This LG monitor uses OLED display technology.
Q: What is the response time of this LG monitor?
A: This LG monitor boasts a 0.03ms (GtG) response time.
Q: LG says on their website hdmi is 2.1 and bestbuy is saying hdmi 2.0. Which one is it on this model?
A: The Connectivity specifications on Best Buy are incorrect. The HDMI ports for the LG 45-inch UltraGear™ OLED WQHD 240Hz 0.03ms G-Sync Compatible 800R Curved Gaming Monitor with webOS, Model # 45GX90SA-B are both HDMI 2.1 ports...^Ivan.

Experience lightning-quick speed with up to a 240Hz refresh rate¹ and 0.03ms response time on a huge 45" WQHD curved OLED monitor. UltraGear Fact: The 45-inch 21:9 45” UltraGear OLED monitor delivers more screen area than a 49-inch 32:9 aspect ratio screen. The sweeping, steep 800R curve surrounds you in the action. And with the 240Hz refresh rate, and 0.03ms response time, the action is fast, the play seamless and precise. Dive into UltraGear OLED’s immaculate visuals with up to 98.5% of DCI-P3 color coverage and a 1,500,000:1 contrast ratio for stunning blacks and vibrant colors. LG's game-changing webOS streaming platform adds ease and versatility, letting you enjoy your favorite entertainment streaming platforms as well as cloud gaming services from one, simple to access home screen. Adaptive sync technologies FreeSync Premium Pro and NVIDIA G-SYNC compatibility ensure tear-free, stutter-free performance, whether you're on PC or next-gen consoles. Plus, the UltraGear's 2-year OLED limited warranty and OLED Care features give you peace of mind, keeping your UltraGear monitor in top shape. Designed for gamers, the virtually borderless design complements any gaming setup, with height, tilt, and pivot adjustments for optimal comfort. The RBG backlighting creates the mood that’ll upgrade any battlestation.

Unleash unparalleled gaming prowess with the world's first 5K2K WUHD (5120 x 2160) resolution OLED gaming monitor¹. This 45" curved UltraGear monitor elevates your gameplay experience with Dual Mode technology. Dual Mode lets a player switch between breathtaking UHD visuals at up to 165Hz, or Full HD at a blistering 330Hz for ultra-responsive gameplay in FPS, MOBA, or racing titles²—all at the touch of a hotkey. Immerse yourself in up to 1300 nits brightness in UltraGear OLED brilliance, boasting up to 98.5% DCI-P3 color coverage, a staggering 1.5M:1 contrast ratio, and DisplayHDR True Black 400. The dramatic 800R curve and 21:9 aspect ratio offer more vertical screen space than a 49” 32:9 display, pulling you deeper into the action like never before. A sleek, slim design offers adjustable height, tilt, and swivel controls for your perfect view, complemented by RGB backlighting to set the mood for your battlestation. Equipped with DisplayPort 2.1, HDMI 2.1 ports, and USB Type-C with 65W power delivery, plus NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro support, you’ll enjoy smooth, tear-free gaming at high refresh rates. UltraGear's 2-year limited warranty and OLED Care tools, give you OLED gaming peace of mind as well.

Samsung’s 49" Odyssey OLED G9 Dual QHD Curved Gaming Monitor takes gaming to new heights. Content springs to life with a wider color spectrum and vibrant images on a 5120 x 1440 resolution screen. OLED technology delivers near instant reaction time with 0.03ms (GtG) and a 240Hz refresh rate. G-Sync compatibility keeps the GPU and panel in perfect sync, which reduces choppiness, screen lag, and image tearing. The wide 32:9 screen in Dual QHD resolution and 110 PPI provides an unparalleled level of clarity. OLED Glare Free technology significantly reduces glare from external sources for a distraction-free presentation. OLED Safeguard automatically adjusts brightness, reduces heat, and dims during breaks. Deep Black Levels depict truer black and dark colors on screen for supreme depth in every game. The ergonomic height-adjustable stand with tilting enables the ideal angles during game play. HDMI 2.1, Micro HDMI, DisplayPort, USB-C Upstream and Downstream ports provide increased flexibility and reduce cable clutter. CoreSync & Core Lighting+ add color and enhance the screen’s surroundings for an immersive experience. Picture-in-Picture and Picture-by-Picture makes multitasking easy and efficient. 3-Year Warranty.

Experience stunning performance with the vast 34” curved WQHD LG UltraGear OLED gaming monitor. Stay a step ahead of the competition with an ultra-fast refresh rate up to 240Hz and .03ms response time that will bring you into the game like never before¹. And with the steep and dramatic 800R curve, you’ll feel enveloped in the action from virtually all around you. This UltraGear's ultra-thin, bezel design, height, tilt and swivel adjustability along with impressive connectivity options and make this UltraGear, ultra-essential for your battlestation setup.
| Pros for LG - UltraGear 45" OLED QHD 240Hz 0.03ms G-Sync/FreeSync Premium Pro Smart Gaming Monitor with DisplayHDR 400 TRUE - Black | |||
|---|---|---|---|
| Cons for LG - UltraGear 45" OLED QHD 240Hz 0.03ms G-Sync/FreeSync Premium Pro Smart Gaming Monitor with DisplayHDR 400 TRUE - Black | |||
| There were no cons for this product— | There were no cons for this product— |
Customers are pleased with the UltraGear 45" OLED QHD monitor's overall performance, making it a premium display choice. The screen size and OLED quality contribute to an immersive gaming experience, while the high refresh rate ensures smooth visuals. Gamers appreciate how these features combine to enhance their gameplay.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
This is a pretty good screen the colors pop and it's very emersive, LG has come a long way and continue to put out good product, I think this is a little over priced and the built-in speakers are terrible, but the picture quality is great.
Posted by Badluck123
Absolutely amazing. Paired with a Asus Astral 5090 this monitor is allowed to shine. Getting the 4K at 165 fps is mind blowing. Cost is expensive for sure but man is it absolutely worth it. I got the 3440x1440 but enjoyed the ppi and quality from 4k. If you don't have a 50 series card or a 4090 I would go for the 3440 model. Much better experience.
Posted by Elitistmango
Picked this up a couple of days ago took me a while to rearrage my setup. This thing is massive and the picture is amazing. I was indecisive on this model or the previous year model due to ppi and text fridging. I cannot see any text fridges or blur to my eye. The anti glare on the screen is nice and the curve makes it feel very immersive. Overall id say its awesome.
Posted by Cdave1995