LG - UltraGear 27" OLED QHD 480Hz 0.03ms NVIDIA G-SYNC, AMD Freesync Premium Pro Gaming Monitor (HDMI x2, DisplayPort, USB) - Black
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Highlights
- Key Specs
- Refresh Rate: 480Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 2560 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Panel Type: Not Applicable (Technology that affects response time and image quality.)
- Synchronization Technology: G-SYNC (NVIDIA Adaptive Sync), FreeSync Premium Pro (AMD Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Screen Size: 26.5 inches (Size of the screen, measured diagonally from corner to corner.)
- OLED Technology: Standard OLED
- Display Connector(s): 1 x DisplayPort, 2 x HDMI (The number and type of connectors used to connect to an external display.)
- General
- Brand: LG
- Model Number: 27GX790A-B
- Product Name: UltraGear 27" OLED QHD 480Hz 0.03ms NVIDIA G-SYNC, AMD Freesync Premium Pro Gaming Monitor (HDMI x2, DisplayPort, USB)
- Color: Black
- Operating System Compatibility: Not Applicable, Not Applicable, Not Applicable, Not Applicable, Not Applicable
- Display
- Refresh Rate: 480Hz (The number of frames per second the device can produce natively without enhancement. Higher rates help produce smooth, seamless pictures.)
- Maximum Resolution: 2560 x 1440 (Maximum resolution refers to the highest number of pixels that a screen can process and display. Higher resolution signals produce more detailed images.)
- Native Resolution: 2560 x 1440 (Native resolution of a screen refers to its single, fixed resolution. Sometimes screens must scale an image up or down in order to fit the native resolution. This can cause a loss of resolution or detail.)
- Contrast Ratio: 1,500,000:1 (Measured difference between a displayed image's brightest whites and darkest blacks. The larger the first number, the more detail and color that can be displayed.)
- Response Time: 0.03 milliseconds (The speed at which pixels can change colors is called response time. It is measured in milliseconds (ms).)
- Display Type: OLED
- Panel Type: Not Applicable (Technology that affects response time and image quality.)
- Synchronization Technology: G-SYNC (NVIDIA Adaptive Sync), FreeSync Premium Pro (AMD Adaptive Sync) (Generally, these technologies allow syncing between a computer/console game's frame rate and the device's refresh rate for a smoother display without tearing.)
- Aspect Ratio: 16:9 (The measurement of the width of a screen compared to the height of a screen, expressed as a ratio.)
- Curved Screen: false
- Pixel Density: 111 pixels per inch (The number of pixels present per inch on the device's display. Higher pixel density improves the clarity and sharpness of the displayed image.)
- Brightness: 275 candela per square meter (A measure of the total light output.)
- Screen Size: 26.5 inches (Size of the screen, measured diagonally from corner to corner.)
- High Dynamic Range (HDR): true (An HDR-compatible 4K TV or other HDR-compatible product displays HDR video content when it's available from sources like 4K Ultra HD Blu-ray Discs and 4K streaming services.)
- High Dynamic Range Format: VESA Certified DisplayHDR 400 True Black, HDR 10 (There are a few HDR formats that tell the TV or other HDR-compatible product how to best utilize its capabilities to display HDR content. HDR technology can support one or multiple formats, each with various benefits to picture quality.)
- Horizontal Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from either side.)
- Vertical Viewing Angle: 178 degrees (The maximum angle at which the display can be viewed with acceptable visual performance from above or below.)
- Touch Screen: false (Touch-screen devices make navigating more intuitive. Using a touch-screen display, you can do things such as tap to select, hold and drag to move items, swipe to scroll, and pinch to zoom.)
- On-Screen Display Languages: English (The available language options for displayed text.)
- Display Surface: Anti-glare
- Color Gamut (NTSC): 98.5 percent
- OLED Technology: Standard OLED
- Connectivity
- Number of DisplayPort Inputs (Total): 1
- Number of HDMI Inputs (Total): 2
- Display Connector(s): 1 x DisplayPort, 2 x HDMI (The number and type of connectors used to connect to an external display.)
- Number of USB Ports (Total): 3
- USB Ports: 2 x USB-A 3.0 (The number and type of USB ports the product has.)
- Headphone Jack: true (The device features an interface that allows for the connection of headphones.)
- Compatibility
- Wall Mountable: true (The product is able to be secured to a wall. Some products are designed ready to mount, while others may require additional hardware/accessories for installation.)
- VESA Wall Mount Standard: 100mm x 100mm (VESA wall mount standards refer to the spacing of screw holes built into a TV in order to fit with standard TV wall mounts. These standards are implemented into most TVs and monitors.)
- Features
- Tiltable: true
- Adjustable Stand Height: true
- Anti-Glare: true (Product has features, such as a matte finish, that reduce the likelihood for screen glare.)
- Eye Relief Features: Anti-glare
- Built-In Webcam: false
- Integrated Speaker(s): false
- Dimensions
- Product Height With Stand: 22.8 inches
- Product Height Without Stand: 13.8 inches
- Product Width: 23.8 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
- Product Depth (With Stand): 9.8 inches
- Product Depth Without Stand: 1.8 inches
- Product Weight: 20.5 pounds (The out of box weight of the item.)
- Stand Included: true
- Certifications Listings & Approvals
- ENERGY STAR Certified: false (Devices carrying the ENERGY STAR service mark, such as computer products and peripherals, kitchen appliances, and other products, generally use 20% to 30% less energy than required by federal standards.)
- EPEAT Qualified: false (The Electronic Product Environmental Assessment Tool (EPEAT) was designed to provide an environmental assessment tool for purchasers. In order to qualify for EPEAT, a product must meet all 23 required criteria.)
- Warranty
- Warranty - Parts: 2 years
- Warranty - Labor: 2 years
- Other
- UPC: 195174108277
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.
- 27” OLED Brilliance With Up To 480Hz of Game-Changing Speed: Experience ultra-smooth, tear-free gameplay with up to 480Hz refresh rate³ and 0.03ms response time on a bright 27” QHD OLED display. React instantly, spot every detail, and outpace your opponents in every frame with unbeatable speed and clarity.
- Unleash Next-Gen Speed with Future-Ready DisplayPort 2.1: DisplayPort 2.1 delivers ultra-fast data speeds for flawless 480Hz gameplay. Enjoy sharper visuals with higher resolution support, virtually zero lag, and instant responsiveness, giving you the edge to dominate.³ The monitor also has two HDMI 2.1 ports and USB 3.0 connectivity (1 upstream / 2 downstream)
- Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW: Get lost in vivid visuals with OLED technology, delivering exceptional brightness, up to 98.5% of DCI-P3 color coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400. Every gaming scene pops with deep blacks, brilliant highlights, and cinematic color.
- Ultimate Frame Sync: FreeSync Premium Pro & G-SYNC Compatible: Say goodbye to screen tearing and stutter. With AMD FreeSync Premium Pro and NVIDIA G-SYNC compatibility, this OLED monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming.³
- Seamless Display, and Adjustable to Gamer Specs: Dive into gameplay on the virtually borderless 27” OLED screen. The slim-profile display has adjustable height, tilt, swivel and pivot controls that let you customize your view, while RGB hexagonal backlighting amps up your battle station, making every session a vibe.
- Up To 98.5% DCI-P3 Color Coverage: With up to 98.5% DCI-P3 color spectrum coverage, the OLED display brings HDR games to life, delivering vibrant colors for stunning visual realism in every frame.
- 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 deadly accuracy.
- OLED Protection: 2-Year Limited Warranty & Panel Care Tools: Rest easy knowing your OLED monitor is built to last. The 2-year limited warranty covers key components, including the OLED panel. And OLED Care tools such as pixel cleaning keep your display sharp, for reliable top-tier performance. Please see warranty information on this page for all warranty details.
- 4-Pole Jack & DTS HP:X: Gaming Audio Unleashed: Experience lifelike 3D audio with DTS Headphone:X⁴, 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 gameplay comms through a single connection.
- Low Glare, More Focus: Play Without Distractions: Stay in the zone with an OLED screen that’s designed to minimize glare and reflections. The anti-glare surface reduces light distractions, so you can keep your attention where it matters—on every move, every target, and every win.
- 27” OLED Brilliance With Up To 480Hz of Game-Changing Speed: Experience ultra-smooth, tear-free gameplay with up to 480Hz refresh rate³ and 0.03ms response time on a bright 27” QHD OLED display. React instantly, spot every detail, and outpace your opponents in every frame with unbeatable speed and clarity.
- Unleash Next-Gen Speed with Future-Ready DisplayPort 2.1: DisplayPort 2.1 delivers ultra-fast data speeds for flawless 480Hz gameplay. Enjoy sharper visuals with higher resolution support, virtually zero lag, and instant responsiveness, giving you the edge to dominate.³ The monitor also has two HDMI 2.1 ports and USB 3.0 connectivity (1 upstream / 2 downstream)
- Bright Picture. Deep Blacks, Brilliant Detail: OLED Gaming FTW: Get lost in vivid visuals with OLED technology, delivering exceptional brightness, up to 98.5% of DCI-P3 color coverage, a 1.5M:1 contrast ratio, and DisplayHDR True Black 400. Every gaming scene pops with deep blacks, brilliant highlights, and cinematic color.
- Ultimate Frame Sync: FreeSync Premium Pro & G-SYNC Compatible: Say goodbye to screen tearing and stutter. With AMD FreeSync Premium Pro and NVIDIA G-SYNC compatibility, this OLED monitor delivers ultra-smooth, tear-free visuals, giving you perfect frame sync across PC and next-gen console gaming.³
- Seamless Display, and Adjustable to Gamer Specs: Dive into gameplay on the virtually borderless 27” OLED screen. The slim-profile display has adjustable height, tilt, swivel and pivot controls that let you customize your view, while RGB hexagonal backlighting amps up your battle station, making every session a vibe.
- Up To 98.5% DCI-P3 Color Coverage: With up to 98.5% DCI-P3 color spectrum coverage, the OLED display brings HDR games to life, delivering vibrant colors for stunning visual realism in every frame.
- 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 deadly accuracy.
- OLED Protection: 2-Year Limited Warranty & Panel Care Tools: Rest easy knowing your OLED monitor is built to last. The 2-year limited warranty covers key components, including the OLED panel. And OLED Care tools such as pixel cleaning keep your display sharp, for reliable top-tier performance. Please see warranty information on this page for all warranty details.
- 4-Pole Jack & DTS HP:X: Gaming Audio Unleashed: Experience lifelike 3D audio with DTS Headphone:X⁴, 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 gameplay comms through a single connection.
- Low Glare, More Focus: Play Without Distractions: Stay in the zone with an OLED screen that’s designed to minimize glare and reflections. The anti-glare surface reduces light distractions, so you can keep your attention where it matters—on every move, every target, and every win.
Whats Included
- Monitor
- Power Cable
- DisplayPort Cable
- HDMI Cable
- USB A to B Cable
- Calibration Report (Paper)
- Monitor
- Power Cable
- DisplayPort Cable
- HDMI Cable
- USB A to B Cable
- Calibration Report (Paper)
Product Manuals
Disclaimers
- ¹Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ²Requires graphics card that supports DisplayPort 2.1 to achieve up to 480Hz refresh rate support. Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ³PLEASE NOTE: NVIDIA has released the GeForce Hotfix Display Driver 576.26 (April 28, 2025) to resolve screen blackouts when connecting to DisplayPort 2.1 on NVIDIA RTX 50 Series GPUs. NVIDIA GPU users should download and install the latest display driver before connecting a DP2.1 monitor. Graphics card that supports DisplayPort 1.4 or HDMI 2.1 are required to achieve up to 240Hz refresh rate support. Graphics card sold separately.
- ⁴Headphones sold separately. For DTS patents, see http://patents.dts.com. Manufactured under license from DTS, Inc. or its affiliates. DTS trademarks and logos are registered trademarks or trademarks of DTS, Inc. in the United States and other countries. ALL RIGHTS RESERVED.
- ¹Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ²Requires graphics card that supports DisplayPort 2.1 to achieve up to 480Hz refresh rate support. Actual refresh rates may vary depending on computer graphics specifications and configurations.
- ³PLEASE NOTE: NVIDIA has released the GeForce Hotfix Display Driver 576.26 (April 28, 2025) to resolve screen blackouts when connecting to DisplayPort 2.1 on NVIDIA RTX 50 Series GPUs. NVIDIA GPU users should download and install the latest display driver before connecting a DP2.1 monitor. Graphics card that supports DisplayPort 1.4 or HDMI 2.1 are required to achieve up to 240Hz refresh rate support. Graphics card sold separately.
- ⁴Headphones sold separately. For DTS patents, see http://patents.dts.com. Manufactured under license from DTS, Inc. or its affiliates. DTS trademarks and logos are registered trademarks or trademarks of DTS, Inc. in the United States and other countries. ALL RIGHTS RESERVED.
Q: Does this monitor have built-in speakers?
A: No, this monitor does not have built-in speakers.
Q: What is the contrast ratio of this monitor?
A: This monitor boasts a 1,500,000:1 contrast ratio.
Q: Does this monitor support HDR?
A: Yes, this monitor supports HDR and is VESA Certified DisplayHDR 400 True Black.
Q: How many HDMI inputs does this monitor have?
A: This monitor is equipped with two HDMI inputs.
Q: What is the response time on this LG monitor?
A: This LG monitor has a 0.03ms response time.
Q: Can I adjust the height of this monitor?
A: Yes, the stand on this monitor has adjustable height.
Q: Will this monitor work with a LG Television Remote Control - AKB76044701 ?
A: The LG 27-inch UltraGear OLED QHD 1440P 480Hz 0.03ms G-Sync® Compatible DisplayPort 2.1 Gaming Monitor, Model # 27GX790A-B, is incompatible with the LG Television Remote Control Part # AKB76044701, and will not work with the remote...^Ivan.
A: Hi there, thank you for reaching out to us! We understand you're inquiring about the KVM switch feature for the LG 27GX790A-B gaming monitor. This model does not come with a built-in KVM switch. However, we do offer the Dual Controller feature on this monitor, which allows you to control two devices connected to the monitor using a single keyboard and mouse, which might be useful for managing multiple systems. Regarding your second question about 480Hz monitors with KVM functionality, currently, there are no 480Hz LG monitors that come with a KVM switch. We recommend checking the specifications of our upcoming models, as we continue to innovate in the gaming monitor space! https://www.lg.com/us/monitors/lg-27gx790a-b-gaming-monitor#pdp_specs For more information or if you need further assistance, please feel free to send us a private message on Social Media @LGUSSupport, and our team will be happy to assist you further. We appreciate your interest in our products! —Renzo
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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.
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| Pros for LG - UltraGear 27" OLED QHD 480Hz 0.03ms NVIDIA G-SYNC, AMD Freesync Premium Pro Gaming Monitor (HDMI x2, DisplayPort, USB) - Black | |||
|---|---|---|---|
| Refresh Rate, Color Quality, Design, Resolution | OLED Quality, Image Quality | There were no pros for this product— | Refresh Rate, OLED Quality, Picture Quality, Black Levels, HDR |
| Cons for LG - UltraGear 27" OLED QHD 480Hz 0.03ms NVIDIA G-SYNC, AMD Freesync Premium Pro Gaming Monitor (HDMI x2, DisplayPort, USB) - Black | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Glare, Cable Management |
Specs
Reviews
Customers are saying
Customers are positive about the UltraGear 27" OLED monitor's color quality, frequently praising its premium build and improved brightness. The high refresh rate is another major plus, with many users highlighting its benefits for competitive gaming. Its responsiveness is also lauded as exceptional. There were no negative customer comments reported.
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.
- Rated 5 out of 5 stars
Great Monitor for the Price
I picked up this monitor on sale, and for the price, it’s an absolute powerhouse. The 480 Hz refresh rate paired with a 0.03 ms response time delivers motion clarity that’s on another level—fast-paced games look razor sharp even in hectic moments. The OLED panel produces deep blacks, vibrant colors, and stunning contrast, so the visuals in every game feel incredibly immersive. Performance-wise, it’s a dream for competitive gaming, and even cinematic titles benefit from the HDR and color accuracy. The build quality feels premium, and G-SYNC/FreeSync compatibility ensures smooth gameplay across different GPUs. It’s not perfect—brightness isn’t the highest compared to some newer OLEDs, and there are no built-in speakers. Also, to take full advantage of 480 Hz, you’ll need a pretty powerful PC. But if you can grab it at a discount, it’s one of the best high-refresh OLED monitors for the money. I was playing the Battlefield 6 beta with this monitor and it looks great and with the high FPS it was a truly different experience compared to typical IPS monitors. Other games look great Witcher 3 looks great as well. So many games look great. Highly recommend picking up this monitor; however, if you can wait for it to be on sale that would be even better.
Posted by AndrewO
- Rated 5 out of 5 stars
This honestly feels like cheating…
Going from an ASUS 1080p 180Hz TN-display, to an LG 2K 144Hz IPS-display, to this MONSTER!? It honestly feels like cheating… What ghosting and frame variance issues of IPS-displays? Why crave and reminisce about the smoothness, albeit horrible color accuracy, of TN-displays? Why compromise on beautiful color accuracy for speed? This monitor is the complete and OP package. For those that claim they can’t see the difference of higher refresh rate monitors!? Just drag the mouse around on the Desktop with this BEAST…that will be all of the proof you need. Having this monster side-by-side to my previously purchased LG monitor makes it even more painfully obvious how important your gaming monitor is to unlock your full gaming potential. Most setups have limited games they can push at 500+ FPS @ QHD/2K, but you won’t have to worry about your monitor being a bottle neck for a LONG while. After drooling from all of the LG OLED HDR videos on YouTube - this monitor has breathed new life into all of my games, videos, and productivity. Regardless if they are retro, single-player, or online competitive games - everything is SO much better on this monitor. FYI - don’t freak out if the color “grey” looks wonky at first. Be sure to connect the included high-speed USB-C cable and install LG’s software for some calibrations and pixel cleaning to significantly improve color accuracy. No 3rd-party calibration hardware needed (even though they are also supported by LG’s app). Why are you still reading this? Come join the other side. My only regret is that I took far too long to pull the trigger, and that I have to save up a bit and wait to buy another, lol…
Posted by Mario
- Rated 5 out of 5 stars
Don't Think Twice - Get this Monitor!
This monitor is a beast! Build quality and aesthetics are unbeatable; it's gorgeous. Controls are easy to use, and if you use the stand, it has a thoughtfully designed wire management port, which cleans things up. On performance, I can only describe the usage from a productivity standpoint, as I sadly haven't had the chance to game on it yet. The colors are exceptional, everything you expect from a top-tier OLED monitor. The brightness and max-brightness are fantastic, which is typically an issue with OLEDs. I've used this monitor for the past 4 months at a school where I primarily coded with it, wrote papers, and did a lot of reading. I wouldn't trade this for anything; it's really been nothing but amazing each time I use it.
Posted by ChrisW
