Customer Ratings & Reviews

+ Great HDR Min and Max for this price range + G-Sync compatible + 120Hz for Gaming +Deep Blacks and Rich Colors, really showing off the OLED. + No noticeable burn in since being in heavy use from Feb 17, 2025 Currently, I don't have any negatives to report. Quality is great and the burn in worry doesn't seem relevant here as it has many features to keep this from happening. The colors are rich and the black levels are amazing for this price range. I've been gaming since I received it and have been having a great time enjoying the quality of image it provides. I recommend this TV for Gaming or a small bedroom for watching movies.

The LG B4 OLED TV offers a truly stunning visual experience, especially when enjoying high-dynamic-range content. Its OLED panel ensures that colors on HDR and Dolby Vision content truly pop with incredible vibrancy and depth. Blacks are exceptionally deep, providing a remarkable contrast that enhances every scene. This television delivers bright highlights and rich shadow detail, making for an immersive viewing experience. Overall, the LG B4 OLED TV is an excellent choice for those seeking superior picture quality.

**Review of the LG B4 48" 4K 120Hz OLED as a Computer Monitor and Gaming Display** The LG B4 48" 4K 120Hz OLED (OLED48B4PUA) is a stellar entry-level OLED TV that doubles as an exceptional computer monitor and gaming display, particularly for my setup. As someone who values vibrant visuals, smooth performance, and immersive gaming, this display has transformed my desk into a powerhouse for both productivity and entertainment. Below, I’ll break down its performance, features, and how it integrates into my gaming and computing environment, drawing on its technical strengths and my personal experience. ### Picture Quality: A Visual Masterpiece The LG B4’s OLED panel delivers the deep blacks, infinite contrast, and vibrant colors that OLED technology is renowned for. With a native 4K resolution (3840x2160), every detail in games, movies, and desktop applications pops with stunning clarity. The WOLED panel ensures perfect black levels, eliminating blooming or haloing around bright objects, which is a game-changer for dark scenes in games like *Elden Ring* or *Cyberpunk 2077*. The B4’s color accuracy is impressive, covering 97.32% of the DCI-P3 color gamut, making it ideal for both gaming and creative tasks like photo editing. However, its peak HDR brightness (655 nits on a 10% window) is slightly lower than the LG C4, which might be noticeable in very bright rooms. For my dimly lit setup, this is a non-issue, as the display still looks phenomenal with HDR content.[](https://www.pcgamer.com/lg-oled48cx-tv-review/)[](https://www.techradar.com/televisions/i-tested-a-cheap-lg-oled-tv-heres-how-it-compares-to-a-more-expensive-oled-tv) The 48-inch size feels like having two ultrawide monitors stacked vertically, offering immense screen real estate for multitasking. Whether I’m gaming, coding, or browsing, the pixel density (around 91 PPI) is sufficient when seated about 32 inches away, though text clarity could be sharper for prolonged reading compared to smaller, high-PPI monitors. The anti-reflective coating helps mitigate glare, but the glossy finish can still reflect in bright environments, so I keep my room lighting controlled.[](https://jahed.dev/2025/03/12/lg-b4-oled-tv-pc-monitor/) ### Gaming Performance: A Dream for Console and PC Gamers For gaming, the LG B4 is a beast. Its four HDMI 2.1 ports support 4K at 120Hz, Variable Refresh Rate (VRR) with Nvidia G-Sync and AMD FreeSync, and Auto Low Latency Mode (ALLM), ensuring buttery-smooth gameplay with minimal tearing or stuttering. The input lag, measured at 9.1ms in Game Optimizer mode with Boost enabled, is exceptionally low for a TV, rivaling dedicated gaming monitors. I’ve tested it with my PS5 and PC (equipped with an Nvidia RTX 3080), and games like *God of War Ragnarök* and *Forza Horizon 5* run flawlessly at 4K 120Hz, with vivid colors and no noticeable motion blur thanks to the OLED’s near-instantaneous 0.03ms response time.[](https://www.techradar.com/televisions/lg-b4-review)[](https://www.tomsguide.com/tvs/lg-b4-oled-review)[](https://www.techradar.com/televisions/i-tested-a-cheap-lg-oled-tv-heres-how-it-compares-to-a-more-expensive-oled-tv) The Game Optimizer dashboard and Game Bar are intuitive, allowing quick adjustments to settings like VRR status, frame rate, and dark area adjustments without pausing gameplay. For PC gaming, the lack of 144Hz support (available on the C4) is a minor drawback, but 120Hz feels plenty smooth for most titles, and console gamers won’t notice the difference since the PS5 and Xbox Series X max out at 120Hz. The B4 also supports cloud gaming platforms like GeForce Now and Amazon Luna, which I’ve used for streaming games with excellent results.[](https://www.techradar.com/televisions/lg-b4-review)[](https://www.rtings.com/tv/reviews/lg/c4-oled)[](https://www.techradar.com/televisions/i-tested-a-cheap-lg-oled-tv-heres-how-it-compares-to-a-more-expensive-oled-tv) ### Integration into My Setup As a computer monitor, the LG B4 has been a game-changer for my desk setup. Mounted on a V-shaped stand (or wall-mounted in some configurations), it fits well on my deep L-shaped desk, though it requires a bit of space management compared to smaller monitors. I use Microsoft PowerToys’ FancyZones to create a 4x4 grid for window management, allowing me to snap multiple applications—like code editors, browsers, and Discord—into precise zones. This setup feels like a true digital workspace, akin to a 120x70cm desk, making multitasking effortless.[](https://www.theverge.com/2022/5/25/23141765/lg-48gq900-oled-tv-gaming-monitor-pc)[](https://jahed.dev/2025/03/12/lg-b4-oled-tv-pc-monitor/) For gaming, I connect my PC via an HDMI 2.1 cable to ensure full 4K 120Hz VRR support, and I’ve enabled Game Optimizer mode to minimize latency. The ability to switch inputs easily (e.g., between my PC and PS5) using the LG Magic Remote is a nice touch, though I mostly stick to PC mode for consistency. The only tweak I made was disabling Auto Brightness Limiter (ABL) using a service remote, as suggested in online forums, to prevent dimming during prolonged static desktop use. This has worked well, and I haven’t noticed any burn-in issues, though I’m mindful of static elements and use screen savers when idle.[](https://jahed.dev/2025/03/12/lg-b4-oled-tv-pc-monitor/)[](https://www.lg.com/hk_en/tv-soundbars/oled/oled48b4pca/)[](https://linustechtips.com/topic/1588791-lg-c4-oled-as-monitor-tips/) Audio is a weak point, with the B4’s 2.0-channel 20W speakers lacking punch for immersive gaming or movies. I’ve paired it with a Dolby Atmos soundbar via HDMI eARC, which elevates the experience significantly. For desk use, I also use a USB-powered DAC with 2.1 speakers connected via the TV’s optical out, which is a cost-effective solution.[](https://www.yahoo.com/tech/lg-b4-oled-review-210027897.html)[](https://jahed.dev/2025/03/12/lg-b4-oled-tv-pc-monitor/) ### Value and Drawbacks Priced at around $799.99 (down from a $1,500 MSRP), the 48-inch B4 is a steal for an OLED, especially compared to the pricier LG C4 ($1,199 for 48 inches). Its value is unmatched in the OLED market, with few competitors like the Sansui 55-inch OLED coming close in price but lacking the B4’s gaming features and brand reliability. The main compromises are its lower brightness compared to the C4, lack of 144Hz for PC gaming, and a reflective screen that requires careful room lighting. The built-in power cord can also be a hassle during setup.[](https://www.ign.com/articles/save-800-off-the-2024-48-lg-b4-4k-oled-smart-tv-doubles-as-a-gaming-monitor)[](https://www.tomsguide.com/tvs/lg-b4-oled-review)[](https://www.yahoo.com/tech/lg-b4-oled-review-210027897.html) ### Conclusion The LG B4 48" 4K 120Hz OLED is a phenomenal choice for my gaming and computing setup. Its OLED panel delivers jaw-dropping visuals, and the 120Hz refresh rate with VRR ensures silky-smooth gaming on both PC and consoles. As a monitor, its massive screen real estate enhances productivity, though it demands a spacious desk and some settings tweaks for optimal use. For the price, it’s hard to beat, offering premium OLED performance without breaking the bank. If you’re looking for an all-in-one display for gaming, work, and media consumption, the B4 is a near-perfect fit—just be ready to invest in a good audio solution and manage its size. **Rating: 5 /5 *Pros*: Stunning OLED visuals, excellent gaming performance (120Hz, VRR, low input lag), great value, versatile for productivity. slightly reflective screen, no 144Hz support, requires desk

The LG B4 Series OLED 4K TV delivers an exceptional viewing experience that combines breathtaking picture quality with smooth, modern performance. Its self-lit OLED pixels produce perfect blacks, infinite contrast, and vibrant, true-to-life colors that make movies, sports, and games look cinematic. HDR formats like Dolby Vision are handled beautifully, revealing intricate details in both bright highlights and deep shadows. Motion handling is another standout feature. Whether you’re watching fast-paced action scenes or live sports, the B4 keeps everything silky smooth with minimal blur, thanks to its advanced refresh rate and processing. Gamers will also appreciate the low input lag, HDMI 2.1 ports, and support for variable refresh rate (VRR), making it a top choice for next-gen consoles.

The picture quality is excellent, you really get true black with this being an OLED. It works perfectly as a gaming monitor when connected to a PC - it supports 120 FPS so perfect for gaming

The LG B4 OLED is stunning with amazing visuals. The deep blacks are great, bright and dark scenes are good, and gaming on here is awesome. I love that all 4 inputs are HDMI 2.1 120 HZ. Pixels are fantastic, and the brightness is spectacular. Finally i got this on sale at $550. There is not much difference between B4 and C4 besides better color/contrast, the price, and the processor. Other than that, basically the same specs with not much tweaks. So you won't be missing out on a lot unless you care and want to spend a few extra hundred bucks. For the budget price for this B4, I would get this.

An amazing tv great color sound great it has good black levels

Best tv I've ever owned love how dark the black color gets makes the actual colors pop on screen

Great TV, it’s OLED so you already know of the nice inky blacks and near perfect color accuracy. Build quality is also very nice, speakers are surprisingly good. All at an affordable price! My only small nitpick is that the power cable is not removable (easily) from the TV itself. Other than that it’s great!

This my first time owning a OLED I have to say it's been probably the best tv i ever bought I never seen so much color and perfect blacks mini led tv's come close but it's not this good my gaming and movie experience upgrade with this tv my Xbox series X is perfect for this OLED with Dolby vision gaming the only con is the brightness but everything else outweighs it.

This LG B4 OLED TV is everything I expected from a TV, good colors, real blacks and excellent sound.

I’d heard for years about the OLED difference but I wasn’t to sure about it. I decided to take a chance and get this LG TV and am very happy with it. Tremendous richness in colors and very thin too! I would recommend for anyone on the fence about upgrading to an OLED!

This TV is great. LG makes the best panels for both monitors and TVs. No input lag for gaming, vivid colors, and awesome AI features to fix lighting/sound. However, the cons are the speakers are mediocre, and the privacy concerns are very disappointing.

Awesome color!! This is an upgrade from my old A2 model.

I’ve been really impressed with the LG 48-inch Class B4 OLED 4K TV. The picture quality is excellent, with deep blacks, vibrant colors, and sharp details that make movies, shows, and games look amazing. The OLED panel really stands out, especially in dark scenes where the contrast looks incredible. Overall, this TV delivers excellent performance and premium picture quality. It’s a great choice if you want an OLED experience in a slightly smaller size.

Bottom line: Great TV and a great buy when on sale. You'll want a soundbar. The LG B4 48" is a great TV, especially for its price when on sale, but it falls short from being a premium product like the C or G series. The less good: - Sometimes there is a blooming effect, a halo around bright areas surrounded by black. It's subtle but definitely noticeable. It's visible on the TV's default screensaver. It's not always noticeable when watching a show or movie. - The TV does a poor job upscaling lower resolution to 4K and yes, I did some research and played with all the settings. An Apple TV device fixes that issue for me. This tells me that the processor in the TV is old and not very good, although the TV's features list is very respectable. - The sound is not good at all. It definitely needs a soundbar. - There is no auto adjust of brightness, viewing setting, or the blue light filter according to the light in the room. So if you view this TV in a room with a window during the day and a dark room during the night, then you'll have to go into the TV's setting and change the thing every single time. My 5 year old middle-of-the-way Samsung does it automatically. - I don't view it from the side, so cannot comment on that. - the build and materials quality is not amazing, but adequate. The good: - This TV is a treat. The picture quality is great. The blacks are still very black albeit occational blooming. LG definitely know what they're doing in the OLED department. - The colors are vivid. Not C2 or newer vivid, but not bad at all. Far more than acceptable. - The TV is plenty bright for me. - Supports a bunch of quality sound and picture quality formats. - There is a setting for reducing blue light, although it would be nice if that was adjustable since it dramatically changes the picture settings. At times it's too much. The great: - The price. This TV was priced very reasonably by BestBuy when it went on sale. I ordered a 55" Hisense U8 but then discovered that this cost even less so I canceled my order and got this instead. - The picture quality that OLED offers is amazing, even if this TV isn't in the same league as the C and G series LF OLED TVs. That said, different technologies have turned much cheaper TVs into much better products, so its about time OLED manufacturers got a run for their money. - The 48" size is great for a smaller room. - Even though the 4K upscaling disappoints, this TVs specs are great. I haven't gamed on it but it's more than just capable in latency, frame rate, brightness, contrast, and adjustability. This might be the TV that shifts OLED TVs from a novelty to mainstream.

Okay, I don't usually write reviews, but I had to share my thoughts on this TV. It's seriously impressive! From the moment I turned it on, I was blown away by the picture quality. The colors are vibrant and realistic, and the clarity is just stunning. Here's what I loved: Picture Quality: Like I said, it's amazing. Sharp, detailed, and the HDR really makes a difference. Whether I'm watching movies, sports, or playing video games, everything looks incredible. Sound: The built-in speakers are surprisingly good. They're not going to replace a dedicated sound system, but they definitely get the job done for everyday viewing. Smart Features: Navigating the menus is a breeze, and the smart features are super responsive. I love having all my streaming apps built-in. Design: The TV itself is sleek and modern. It looks great in my living room. Why not 5 stars? Honestly, it's nitpicking. The only thing that keeps this TV from a perfect score is the remote. It's a little clunky and not as intuitive as I'd like. But seriously, that's it! Overall: This TV is an absolute winner. If you're looking for a fantastic viewing experience without breaking the bank, look no further. Highly recommended!

Got this on sale for $499. An incredible value and perfectly sized for my small living room. The 48" size is available exclusively from Best Buy. I have a 65" C1 LG OLED I bought about 4 years ago (also from Best Buy) and this smaller TV's quality is pretty darn close. The blacks are inky black and the image when playing 120 FPS video games is GREAT. This is an incredible value for the money. The 4 x HDMI 2.1 inputs is a huge plus. People say the speaker in the TV is not great, but I beg to differ. The sound is more than sufficient in my living room and I usually keep the volume at 1/5 max. My only gripe is the remote control (which is the same as my c1) - i've never been the biggest fan of LG remotes, but that is probably just a personal preference.

Tv works great for gaming. Games are still impactful thanks to the TV's perfect black levels and vibrant colors. I did not find any use of the AI, though, just an empty buzzword.

While looking for a new TV to replace my outdated one in my bedroom, I didn’t want to break the bank and spend over $800 for a new TV. After searching the internet, I stumbled across the B4 and have no regrets. For the price I paid, happy is an understatement. During movies and shows, the picture quality is great. Colors really jump out at you, blacks are black, and it feels like you’re inside the scene. Like other OLEDs, this TV does produce some glare, but nothing crazy so keep that in mind. If you mostly watch TV at night with lights off like myself, this TV is perfect for you. To add to that, the speakers aren’t the best if you’re an avid movie enjoyer like myself. I’d highly recommend investing in a soundbar, some speakers, or some other sound system. I would also suggest looking at the pre owned section and save yourself $50 like I did and use it towards a mount or a soundbar. Buying pre owned, I found no scratches, dents, malfunctions or anything. All in all, this is the best budget OLED TV on the market by far.