LG - UltraGear 27" OLED Dual Mode (QHD 540Hz, HD 720Hz) 0.02ms G-SYNC Compatible, AMD FreeSync Premium Pro Gaming Monitor - Black
Customers are saying
Customers consistently note that the overall performance of this product provides a smoother gameplay experience than previous iterations. Users are highly satisfied with the refresh rate and frequently praise the OLED quality for its ability to maintain deep blacks even in bright environments. Additionally, the display is commended for its impressive color accuracy, which allows for a more precise color gradient.
Highlights
Features
Outrageous Speed with LG's Brightest OLED Gaming Monitor
Experience the brightness and speed of 4th Gen OLED on a vivid 27" QHD display—engineered for ultra-smooth, tear-free gameplay. With a refresh rate up to 720Hz and lightning-fast 0.02ms response time, you’ll react faster, track every movement with precision, and outpace your opponents frame by frame with astounding brightness, clarity and speed.
Our Brightest, Boldest OLED Gaming Monitor
Powered by UltraGear’s latest OLED with Primary RGB Tandem tech, this is LG’s brightest OLED gaming monitor yet—reaching 335 nits typical brightness for clear visibility in bright scenes. Enhanced APL and reduced ABL keep critical visuals sharp during intense action, while UL Verified Perfect Black and DisplayHDR True Black 500 deliver deep contrast and pinpoint detail.
Next-Gen OLED Brilliance
4th Gen Primary RGB Tandem OLED reaches 335 nits typical brightness while using less power than previous UltraGear OLED generations. The display's advanced 4-stack RGB structure delivers enhanced contrast, sharper detail, and color precision that stays consistent across every frame.
Dual Mode: QHD 540Hz for Detail or HD 720Hz for Speed
Dual Mode pushes gaming speed to the edge, letting you toggle between QHD resolution at 540Hz or HD at 720Hz from a hotkey. Gain outrageous speed and responsiveness for split-second decisions and competitive domination.
DisplayPort 2.1 Delivers Next-Gen Gaming Speed
DisplayPort 2.1 unlocks ultra-fast data speeds for stable, high-refresh gaming up to 720Hz. USB-C keeps your setup clean with single-cable output, and dual HDMI 2.1 ports connect seamlessly to today’s top consoles. More bandwidth. More clarity. More ways to win.
A Virtually Instantaneous 0.02 Response Time (GtG)
The ultra-fast 0.02 response time (GtG), reducing reverse ghosting and providing fast response time, lets you to enjoy a whole new gaming performance.
NVIDIA G-SYNC Compatible & AMD FreeSync Premium Pro
NVIDIA G-SYNC Compatible and AMD FreeSync Premium Pro deliver smooth, tear-free, low-latency gaming with high refresh rates—so every frame stays fluid and sharp.
UL-Verified for a "Perfect" Visual Experience
Perfect Black: UL-verified Perfect Black delivers true black levels to enhance perceived brightness and contrast, whether it's bright or dark around you. UL-verified Perfect Reproduction delivers that actual game content is faithfully rendered on screen, maintaining intended color and detail in both dark and bright environments.
Deeper Detail with VESA DisplayHDR True Black 500
Experience breathtaking realism with VESA DisplayHDR True Black 500, delivering nuanced shadow detail and rich black expression—even in the darkest game scenes. A 1.5 million:1 contrast ratio pairs with up to 99.5% (typical), DCI-P3 color gamut and Delta E≤2 color accuracy, to ensure colors are vivid, precise, and true to the creator’s intent—giving gamers and creators alike the confidence to see every frame as it was meant to be seen.
ClearMR 21000 Delivers Elite Motion Clarity
Certified at ClearMR 21000—VESA’s highest motion-clarity tier—this display eliminates the faint blur that lingers around fast-moving objects. Every rapid turn, sprint, and effect stays crisp, helping you react faster and play with greater confidence.
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 shooting accuracy
Personalize Your Display with Switch App
With the LG Switch app⁴, easily optimize your monitor for gaming or everyday use. Adjust brightness, fine-tune image quality, apply settings with a hotkey, split the screen into 11 layouts, and launch video calls in a click.
4-Pole Jack & DTS HP:X: Gaming Audio Unleashed
Experience lifelike 3D audio with DTS Headphone⁵, pushing out spatial sound to make you feel even more part of the game. The 4-pole headphone jack combines stereo audio and mic input, delivering crisp sound and clear game-play comms through a single connection.
Virtually Borderless and Adjustable to Gamer Specs
Dive into gameplay on the 4-side, virtually borderless 27” OLED screen. The slim-profile display has adjustable height, tilt, swivel and pivot controls that let you customize your view, while backlighting amps up your battle station, making every session a vibe.
Versatile Connectivity
Versatile connectivity hub: Dual HDMI, DisplayPort 2.1, and USB downstream (x2) and USB upstream ensure seamless connections to all your devices, from consoles and peripherals to productivity gear.
Specifications
- Refresh Rate540HzMaximum Resolution2560 x 1440Response Time0.02 millisecondsSynchronization TechnologyG-SYNC Compatible (NVIDIA Adaptive Sync), FreeSync Premium Pro (AMD Adaptive Sync)Screen Size27 inches
Reviews
Rating 4.5 out of 5 stars with 15 reviews
- Overall Performance (7)
- Refresh Rate (5)
- OLED Quality (4)
- Color Accuracy (3)
Customer Images
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.
- Samsung - 49" Odyssey OLED G9 (G93SD) Dual-QHD 240Hz 0.03ms G-Sync Compatible Curved Glare Free Gaming Monitor - SilverOur 365-day lowest price$999.99
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The LG UltraGear OLED 27GX790B is built for gamers who want every visual and competitive advantage. UltraGear's 27-inch 4th Generation OLED QHD resolution display delivers pinpoint clarity with UL Verified Perfect Black and Perfect Color¹, exposing incredible detail and nuanced highlights. VESA DisplayHDR True Black 500 adds deeper contrast and controlled brightness, giving gamers a sharper read on enemies, environments, and effects in every gaming scenario. Speed is where this UltraGear OLED separates itself from others. Dual Mode² gives gamers two elite paths to victory: a 540Hz refresh rate at QHD resolution for high-resolution precision or 720Hz at HD for pure, unleashed speed. Paired with a near-instantaneous 0.02ms response time, motion stays clean and fast—ideal for tracking targets, reacting faster, and winning close engagements. Your frames stay stable under pressure with NVIDIA G-SYNC compatibility and AMD FreeSync Premium Pro³, delivering tear-free, low-latency performance. VESA Certified ClearMR backs it up with verified motion-blur clarity, keeping visual noise out of the fight. For next-gen setups, DisplayPort 2.1 ensures maximum bandwidth for high refresh rates and smooth data flow. A 4-pole headphone jack supports game audio and comms through one connection. And with full ergonomic control—height, tilt, swivel, and pivot—you can dial in your perfect competitive setup. The 27GX790B delivers elite OLED performance, breakthrough speed, and incredible performance built for players who refuse to settle.
The 27" QHD UltraGear OLED gaming monitor is built for next-gen performance, whether you're on PC or console. A glossy finish OLED display, with a sharp QHD (2560 x 1440) resolution delivers razor-sharp visuals, up to 98.5% DCI-P3 color coverage, and VESA DisplayHDR True Black 400 for cinematic contrast and color depth. When every millisecond matters, dominate the action with a 240Hz refresh rate¹, ultra-fast 0.03ms response time, G-SYNC Compatibility, FreeSync Premium Pro, and VESA ClearMR 13000 certification for bright, blur-free, tear-free OLED gameplay. Connectivity is future-ready with two HDMI ports, USB (x3) and DisplayPort 1.4, keeping you locked in on the latest hardware. The fully adjustable stand—tilt, height, swivel, and pivot—lets you play your way, with comfort and control.
The ROG Strix OLED XG27ACDMS is a 27-inch, 280Hz QHD gaming monitor. With the addition of the Neo Proximity Sensor in the new ROG OLED Care Pro suite, the monitor transitions to a black screen when no user is detected, guarding against burn-in.
Experience astounding speed with up to a blistering 480Hz refresh rate¹ and 0.03ms response time on a 27" QHD OLED monitor. Dive into immaculate OLED 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. With next gen connectivity via DisplayPort 2.1, enjoy ultra-fast data transfer supporting higher resolutions at fast refresh rates with razor-sharp visuals and zero lag. 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 and built for gamers, the monitor's virtually bezel-less screen brings you into the action while the RBG backlighting creates the mood for the centerpiece of your ultimate battlestation.
| Pros for LG - UltraGear 27" OLED Dual Mode (QHD 540Hz, HD 720Hz) 0.02ms G-SYNC Compatible, AMD FreeSync Premium Pro Gaming Monitor - Black | |||
|---|---|---|---|
| Overall Performance, Refresh Rate, OLED Quality, Color Accuracy | Color Quality | OLED Quality, Overall Performance, Refresh Rate, Design | Color Quality, Refresh Rate, Design, Gaming Performance |
| Cons for LG - UltraGear 27" OLED Dual Mode (QHD 540Hz, HD 720Hz) 0.02ms G-SYNC Compatible, AMD FreeSync Premium Pro Gaming Monitor - Black | |||
| There were no cons for this product— | There were no cons for this product— | Text Clarity, Pixel Cleaning | Cable Management |
Specs
Questions & Answers
Is it woled
Answered by LG Digital Customer CareThe LG UltraGear™ 27" OLED Dual Mode (QHD 540Hz, HD 720Hz) 0.02ms G-SYNC Compatible, AMD FreeSync™ Premium Pro Gaming Monitor - Black, Model # 27GX790B-B, specifically, uses LG Display’s 4th-generation WOLED technology featuring a 4-stack Primary RGB Tandem structure...^Ivan.
When can i buy this at Best buy. I really need a monitor now
Answered by LG Digital Customer CareHello there, Lotus. Thank you for sharing your question with us. We understand your inquiry regarding the availability of the 27GX790B-B at Best Buy. Because our authorized retailers manage their own individual inventory levels, restock schedules, and shipping timelines, the best way to get a precise date for when they will have this unit ready for purchase is to contact Best Buy directly or monitor their official website for real-time updates. They will be best equipped to provide you with specific information regarding in-store pickup or delivery options for your specific location. https://www.bestbuy.com/product/lg-ultragear-27-oled-dual-mode-qhd-540hz-hd-720hz-0-02ms-g-sync-compatible-amd-freesync-premium-pro-gaming-monitor-black/JJ8VPZKKG3 If you have any further questions about its features or specifications, please contact us on lgdigitalcare@lg.sprinklrsupport.com, and our team will be more than happy to assist you. —Renzo
What is the typical brightness of this OLED gaming monitor?
The typical brightness of this OLED gaming monitor is 335 candela per square meter.
This question and answer was generated by AI based on customer and product data.Are the height of the stand adjustable?
Yes, the stand height is adjustable.
This question and answer was generated by AI based on customer and product data.Does this monitor have G-SYNC compatibility?
Yes, this monitor is NVIDIA G-SYNC compatible.
This question and answer was generated by AI based on customer and product data.
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