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LG - UltraGear evo GX9 39" 5K2K OLED 165Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR TRUE 500 - Black

Model: 39GX950B-B
SKU: 6670040
Sold byBest Buy

Customers are saying

Customers are enthusiastic about the stunning OLED display quality and the impressive overall performance of this product. Users frequently highlight the significant improvements in peak brightness and the exceptional sharpness of the text. Additionally, the inclusion of a versatile range of connectivity ports is well-received by those who have integrated the device into their setups.

Generated by AI based on customer reviews.
See it in-store: Roseville has a demo model on display.

Highlights

Features

  • The OLED Gamers Have Been Waiting For

    This 39-inch 5K2K curved OLED gaming monitor delivers the sweet spot of size, speed, and detail. The 21:9 ultrawide display with 143 PPI provides sharp visuals across a wide workspace, while Dual-Mode refresh rates up to 330Hz and 0.03ms response time keep gameplay smooth and responsive.¹

  • The World’s First 39" 5K2K OLED Gaming Monitor⁶

    This 39-inch 5K2K (5120×2160) UltraGear hits the sweet spot of size, resolution, and speed. The wide 21:9 format and 1500R curve expand your field of view, while the dense pixel count delivers crisp detail across every scene in the games you love.

  • AI Upscaling to 5K2K—No GPU Upgrade Required

    UltraGear evo’s built-in processor uses AI Upscaling to enhance content toward the display’s 5K2K resolution. It analyzes the source signal to improve detail and clarity—helping games and video look sharper without requiring a GPU upgrade.

  • Next-Gen Brilliance with 4th Gen RGB Tandem OLED

    4th Gen Primary RGB Tandem OLED delivers up to 335 nits typical brightness with improved power efficiency. Its advanced 4-stack RGB structure enhances contrast, sharpens detail, and keeps color precise across every frame.

  • 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 ensures game content is faithfully rendered on screen, preserving intended color and detail. This certification reflects real-world content accuracy.¹

  • Deeper Detail with VESA DisplayHDR True Black 500

    VESA DisplayHDR True Black 500 reveals rich blacks and nuanced shadow detail—even in dark scenes. Combined with a 1.5M:1 contrast ratio, up to 98.5% (typical) DCI-P3 color, and Delta E≤2 accuracy, visuals appear vivid, precise, and true to the creator’s intent.

  • High 143 PPI for Sharp, Detailed Visuals

    With a sharp 143 PPI pixel density, in-game text, HUD elements, and fine visual details appear crisp and easy to read. The added clarity also improves everyday tasks like writing, web browsing, and working with text-heavy documents.

  • More Room to Create with 5K2K Ultrawide

    The expansive 21:9 5K2K display with 143 PPI delivers sharp detail across a wide creative workspace. Edit video, retouch photos, and manage timelines on one seamless screen—while keeping documents, research, and multiple windows visible at the same time.

  • Dual Mode: 5K2K 165Hz for Detail or WFHD 330Hz for Speed

    Switch between 5K2K resolution at 165Hz for cinematic AAA titles and Wide Full HD at 330Hz⁸ for ultra-responsive competitive gaming. VESA Certified Dual-Mode lets you optimize resolution and refresh rate to match the way you play.

  • Near-Instant 0.03ms (GtG) Response Time

    With a near-instant 0.03ms (GtG) response time, pixels transition incredibly fast—helping reduce ghosting and keep fast-moving gameplay clear and responsive.

  • NVIDIA G-SYNC Compatible & AMD FreeSync Premium Pro

    Minimize screen tearing and stuttering with NVIDIA G-SYNC compatibility⁷ and AMD FreeSync Premium Pro. These adaptive sync technologies help keep gameplay smooth and responsive by matching the monitor’s refresh rate to your GPU—so fast action stays clear with reduced blur and ghosting.

  • Future-Ready Connectivity for High-Performance Gaming

    DisplayPort 2.1⁷ (UHBR20), USB Type-C with 90W power delivery, and HDMI 2.1 provide the connectivity modern gaming setups demand. DP 2.1 delivers the ultra-high bandwidth needed for high-resolution, high-refresh-rate gameplay, while USB-C supports display, data, and charging through a single cable. HDMI 2.1 ensures stable connections with consoles and other devices.

  • AI Sound Enhances Voices and Key Audio Cues

    The AI Sound setting analyzes on-screen action and separates voices, sound effects, and background audio. AI Sound helps keep team comms clear while highlighting important gameplay cues—like approaching footsteps or nearby action—through speakers or connected headphones.

  • AI Scene Optimization Adapts to Your Content

    The AI Scene Optimization setting detects what’s on screen and automatically adjusts picture settings like color temperature and sharpness. It helps optimize the display across preset modes such as Office, Animation, Movie, Game, and Sports.

  • OLED Care Helps Maintain Your Display

    OLED Care helps maintain your OLED display’s long-term performance. Built-in maintenance features, including Pixel Cleaning, help keep the OLED panel operating at its best for consistent image quality over time.

Specifications

  • Refresh Rate
    165Hz
    Maximum Resolution
    5120 x 2160
    Response Time
    0.03 milliseconds
    Synchronization Technology
    G-SYNC Compatible (NVIDIA Adaptive Sync), FreeSync Premium Pro (AMD Adaptive Sync)
    Screen Size
    39 inches
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Reviews

Rating 4.7 out of 5 stars with 43 reviews

93% would recommend to a friend
Customers are sayingCustomers are enthusiastic about the stunning OLED display quality and the impressive overall performance of this product. Users frequently highlight the significant improvements in peak brightness and the exceptional sharpness of the text. Additionally, the inclusion of a versatile range of connectivity ports is well-received by those who have integrated the device into their setups.
This summary was generated by AI based on customer reviews.
  • OLED Quality (21)
  • Brightness (11)
  • Overall Performance (11)
  • Connectivity (4)
  • Text Clarity (4)

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

    Endgame OLED Ultrawide Monitor

    Coming from a 240hz 32" QD-OLED monitor, I was concerned this WOLED wouldn't live up to my expectations for picture quality, but I must say the color volume and saturation on this monitor doesn't make me miss my old QD-OLED. Also, the 39" is just the right size to be immersive but not overwhelming or nausea-inducing (I tried a 57" ultrawide for a few days but I could not overcome the motion sickness before returning). I also love the 1500R curve, it is there but not too aggressive and coming from a flat monitor, it is the perfect curve to not get overwhelmed. The monitor is also extremely bright (I have brightness set to 70% but I may even reduce it to 50% later), making my other monitors right to next it look dull in comparison. I am running this with a RTX 5090 and while I was concerned about being limited to only 165 hz, I haven't found a game where that has been a problem in actual gameplay. Plus, the wider field of view adds so much additional benefit that make up for the lost FPS ceiling (in my opinion). I always run DLSS Quality when the game I am playing offers that and so my FPS always remains high while my picture quality remains exceptional. Just some examples, at 5120x2160: 40-50 FPS in Marvel Spider-Man 2, ~150 FPS with DLSS frame generation set to 3. 40-45 FPS in Crimson Desert, 140-180 FPS with DLS 4.5 and frame generation set to 4 110 FPS in Dragon's Dogma 2, 165 (capped) with DLS frame gen on. When I am not gaming, I use this monitor for productivity, video editing, and occasional YouTube / TV apps watching. I have no problem reading text on this monitor even with resolution scaling set to 100% and of course, the 21:9 ratio makes video editing so much more enjoyable with the wider screen real estate. I even love the fact that when I put a browser on one half of the screen and watch a YouTube video, the additional width this monitor provides compared to a 16:9 means that the video almost covers the entire vertical length of the screen while only taking up half of the width. The monitor has vent ports on the top (pictured) and an extremely large power brick, but the monitor has never radiated heat that I could perceive while intense gaming or made a loud enough fan noise for me to complain about. I like the monitor stand, but I quickly abandoned it for a desk mount so I could push the monitor back closer to the wall it sits in front of. LG has software called LG Switch (pictured) which allows you to adjust monitor settings (e.g., picture mode, brightness levels, source, dual-mode, AI optimization, etc.) and establish keyboard shortcuts via software, so you don't always have to use the joystick on the back of the monitor. It works well enough but I feel like it is a little sluggish when switching between the picture options and anything else. It also allows you put on "Life Mode" which displays artwork as a screensaver for the monitor or your Google Calendar. I don't think I will use that but I assume some people will find value in it. I don't really have any cons about this monitor. I would say that the bezel around the screen image is slightly larger than most modern displays but its not a big deal because you got 39" inches of real-estate to work with (I added 2 pictures of it side-by-side with a 32" monitor for comparison). I also have no problem with the matte finish of this monitor. In my opinion, I can't even tell the difference between this and my previous glossy finish QD-OLED except when the monitor is off and lights are reflecting off of it. Finally, I do not notice the RGB light behind the monitor at all except with all the lights off in my room.

    Posted by Olamide

  • Rated 5 out of 5 stars

    Gorgeous Display

    This is a Gorgeous Display, as it should be for the price. My old 24" monitor died, so I went to Best Buy for a replacement. Looked at displays, OLED really stood out, and THIS was the brightest clearest sharpest most beautiful display in the place by far. Agonized over the price then bought it. After 3 weeks it has been flawless! Picture perfect, easily runs 2 full-sized windows side by side, motion is clean, picture is beautiful, text is crystal clear. Hope it holds up over time. My old Dell XPS PC with NVidia graphic card pushed it fine, but I HAD to get an Asus ROG Gaming Desktop to really push it properly, which it does easily at max resolution of 5120x2160x165Hz. So my 24" monitor replacement cost me $4K, but I LOVE my new system - as Ferris said, "It is so choice, if you have the means I highly recommend picking one up!".

    Posted by Dave

  • Rated 5 out of 5 stars

    Replaced my 42" OLED, no regrets

    I was running a 42" LG C2 as my desk monitor, I have had it for a few years and after a year of heavy daily use getting started back up in my masters program it started showing uneven brightness on dark backgrounds. I was choosing between this 39" 5K2K and the 45" models; the 39 won for my setup. It's nearly the same width as the C2, and the curve let me push it back into the corner and open the desk up. I raised it to eye level, which gave me room underneath for my Mac mini and drive, and it sits cleanly between my MacBook and iPad on vivo mounts! Text is razor sharp at 5120x2160, which matters because I write and study on it for hours every day, mostly on dark backgrounds. Blacks are true OLED black, and the panel is bright and clean. This monitor is TOP SHELF! Shout out to the manager at the Yuma store. He's taken care of me for five years and walked me through the protection plan options so I bought with confidence. Get the plan if you use an OLED as a daily monitor.

    Posted by Brit

  • Rated 5 out of 5 stars

    New monitor

    So far it’s one of the best monitors I’ve bought. I have no complaints in. The 4K is real good. It’s duel purpose works very good when watching videos but also very good when I’m playing my games no problem like it very much.

    Posted by ANDRE

  • Rated 5 out of 5 stars

    Not just for gaming

    I can’t stand blurry text. You need the pixel density but that’s usually not available for a larger screen. This monitor keeps everything crisp and an Ultra Wide, which is incredibly difficult to find. I could not be happier. I run it in a slightly lower resolution than 4K so that everything can be larger on the screen we still taking advantage of the pixel density and pixel pitch.

    Posted by crave

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Pros for LG - UltraGear evo GX9 39" 5K2K OLED 165Hz 0.03ms G-SYNC FreeSync Premium Pro Gaming Monitor with DisplayHDR TRUE 500 - Black
OLED Quality, Brightness, Overall Performance, Connectivity, Text ClarityOLED Quality, Overall Performance, Brightness, Refresh Rate, Display SizeOLED QualityThere were no pros for this product—

Specs

Questions & Answers

  • This has shown as Sold Out since the first day of listing. LG answered a previous question about availability saying to contact BB as to why. I chatted online with BB rep who said it’s likely unavailable due to supplier?? So who’s holding it up BB or LG?

    The LG UltraGear™ evo GX9 39" 5K2K OLED 165Hz 0.03ms G-SYNC FreeSync™ Premium Pro Gaming Monitor with DisplayHDR™ TRUE 500 - Black, Model # 39GX950B-B, is backordered on Best Buy and on the company site due to extremely high demand, and its status as a brand-new release. Pre-orders only went live in early April 2026, and despite early, limited shipping, the product quickly sold out and moved into a "processing" or "backordered" phase for many customers. This model is highly anticipated as the world’s first 39-inch 5K2K curved OLED gaming monitor, and the new tandem panel technology is in high demand, leading to limited supply. While some initial pre-orders from April 7th-10th began shipping in late April, widespread availability is restricted...^Ivan.

    Answered by LG Digital Customer Care
    LG Digital Customer Care response
  • So do these monitors still auto-install bloatware on your computer without you permission?

    The LG Monitor App Installer was designed to help users discover optional applications that work with their LG monitor and can support monitor control, multitasking, and color calibration to enhance the monitor experience. Companion applications are never installed automatically and require user choice before installation. Based on customer feedback, we have updated the Installer experience so customers can decide whether they would like to install the LG Monitor App Installer and take advantage of its features...^Ivan.

    Answered by LG Digital Customer Care
    LG Digital Customer Care response
  • Does this monitor support eARC on one of the HDMI ports?

    no

    Answered by danny371
  • I saw this come in stock for two days now the page has disappeared; will this be coming back anytime soon?

    It is back in stock now and you can even find the monitor in various BBY stores to view it for yourself.

    Answered by Olamide
  • When is this product expected to be available for purchase?

    It is back in stock now and you can even find the monitor in various BBY stores to view it for yourself.

    Answered by Olamide
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