When comparing Samsung NU7100 40" (UN40NU7100) vs LG B7A OLED 55" (OLED55B7A), the Slant community recommends LG B7A OLED 55" (OLED55B7A) for most people. In the question“What are the best TVs?” LG B7A OLED 55" (OLED55B7A) is ranked 6th while Samsung NU7100 40" (UN40NU7100) is ranked 101st. The most important reason people chose LG B7A OLED 55" (OLED55B7A) is:
The B7A is the perfect choice for HDR content. On top of its exceptional picture quality with perfectly deep blacks, it has everything essential to an excellent HDR experience: an OLED panel, wide color gamut, and high peak HDR brightness levels. Shadow details are perfect and highlights are really stunning, making for an immersive experience. The OLED panel can manipulate pixels individually, which means it has control over every tiny bit of the picture. The panel can also reproduce the colors necessary for true HDR, and these colors will really pop thanks to its high peak brightness level of ~700 nits.
Ranked in these QuestionsQuestion Ranking
Pro Versatile use
From games to movies, sports and use as a PC monitor, the NU7100 is a good TV for diverse usage. The balance of low input lag, good picture quality, and decent motion handling make sure of it.
Pro Handles darkness very well
Even though the NU7100 doesn’t have local dimming, watching TV in the dark is not a problem due to amazing black uniformity - the blacks are even and there are no clouding issues.
Contrast is remarkable too – blacks are deep, and whites are bright.
Pro Good for gaming
The TV is a great option for a PC monitor. Not only does the NU7100 have ideal low input lag thanks to the “_PC_” and “Game” modes, it also features support for most resolutions, except 1440p.
Another thing to note – Samsung’s app store has the Steam Link app, which lets you connect your PC to your TV and play games without needing to connect the Steam Link hardware.
Pro Doesn’t require a lot of setup
When you first turn on the TV, it basically walks you through the setup process and you can start properly using it in a matter of minutes.
Regarding picture quality, it’s also quite reasonable right out of the box. White balance (gray color inaccuracy) and color dE (color inaccuracy) could be tweaked down for better quality, but most people won’t notice a sizeable difference.
In case you can’t figure something out when setting up, the TV also has a handy “e-manual” button.
Pro Great smart features
The NU7100 has a smooth, fast, and easy-to-navigate interface with a lot of room for customization, so you can tailor it for easier access to your most-used apps.
Samsung’s app store has a huge and diverse app library, second only to the Google Play Store.
The SmartThings app allows the user to control the TV and other connected devices via their smartphone.
Pro Perfect for HDR content
The B7A is the perfect choice for HDR content. On top of its exceptional picture quality with perfectly deep blacks, it has everything essential to an excellent HDR experience: an OLED panel, wide color gamut, and high peak HDR brightness levels.
Shadow details are perfect and highlights are really stunning, making for an immersive experience. The OLED panel can manipulate pixels individually, which means it has control over every tiny bit of the picture.
The panel can also reproduce the colors necessary for true HDR, and these colors will really pop thanks to its high peak brightness level of ~700 nits.
Pro Great at handling reflections
The B7A is great at handling reflections. It can fight glare pretty well in bright environments, thanks to its anti-reflective coating on the panel.
Pro Interface is intuitive and user-friendly
The B7A runs on the webOS smart platform, known for its intuitive and fully customizable UI. It’s built around a Launch Bar that provides quick and easy access to the TV's apps, settings, and inputs. This can be customized and re-organized to the user's liking.
Pro Wide viewing angle
The B7A looks good from almost any angle thanks to its OLED panel, making it a great choice if you usually watch the TV with large groups of people.
Its viewing angle is wide enough for a group of audience to experience more or less similar picture quality when watching from multiple angles off the center of the screen. The black levels and brightness only starts degrading at ≥75°, which means the picture quality will stay roughly the same no matter which angle the screen is viewed from.
Pro Great color reproduction
The B7A can reproduce a really broad range of colors that are crucial for HDR, which also means it has zero issues with SDR colors.
It’s capable of reproducing ~70% of the standard colors for 4K HDR, the Rec. 2020 colorspace. This is one of the highest in the 4K TVs market.
It can also display these colors at different brightness levels accurately that conveys much more HDR details than its direct competitors can.
Pro Extremely versatile
Apart from games, the B7A is great for movies and sports. Its top-notch picture quality, combined with the features it offers, makes it perform really well across different kinds of use cases.
Movies look excellent thanks to the exceptional picture quality, and it’s also a great pick for watching sports because the motion blur is non-existent and the panel is really uniform.
It has near-perfect pixel response time of ~1.0ms, resulting in virtually no motion blur, so fast-moving objects like football don’t leave any trails on the screen. The panel is also uniform enough that it has no issues with displaying large, same-color objects on screen, like football fields.
Pro Good value for money
While the B7A can seem rather expensive, the picture quality and features it offers is top-of-the-line and can’t be beaten. The performance easily outclasses all other TVs in this price bracket.
Pro Suitable as a computer monitor
The B7A can display clear and crisp images from a computer thanks to its full 4:4:4 color support. Because of this, text or shapes with clear, hard edges won’t be blurry.
Pro Excellent at handling dynamic content
The B7A can display extremely fast-moving objects smoothly without any blur or lag, thanks to its OLED panel that has near-perfect pixel response time of ~1.0ms.
Pro Excellent for gaming
The B7A is excellent for gaming thanks to its really low input lag and near-perfect pixel response time that gives it virtually no motion blur.
It’s perfect for all types of games, even fast-paced action games. The experience will be really responsive and fluid. Players will have no issues keeping their actions in sync with what’s on the display thanks to the really low input lag of ~20ms, and fast-moving objects won’t leave any trails on the screen because the panel has a response time of ~1.0ms - it can fully change its pixels color in that tiny amount of time.
Pro Remote is well-designed
The B7A comes with LG's Magic Remote, touted for its easy-to-use design.
It works similarly to a Nintendo Wii remote where the on-screen cursor follows the remote's movement, making it easy to navigate the UI and select menu items.
The remote also has a built-in microphone for the voice command feature, which also supports content searching with voice input.
Pro Excellent for HDR gaming
The B7A’s input lag remains low at ~20ms even when gaming in 4K @ 60Hz + HDR, making for an really immersive and responsive HDR gaming experience.
Pro Smart platform has great ecosystem of apps
The B7A runs on the webOS smart platform. It has a great ecosystem of apps, ranging from media streaming services (Netflix, Amazon, YouTube, etc.) to third-party apps. Support for these apps are also first-class with up-to-date features and good performance; for instance, the YouTube app supports 360-degree video playback.
Pro Exceptional picture quality
The B7A's picture quality is top-of-the-line. It has an OLED panel that gives it infinite contrast ratio, excellent screen uniformity, high peak brightness, wide viewing angle, and great handling of reflections.
Thanks to that, it can reproduce blacks perfectly and the uniformity is top-notch - they’re truly dark and even, because the OLED panel has the ability to manipulate pixels individually.
Colors really shine and look true-to-life, thanks to the peak brightness levels peak of ~400 nits for SDR & ~700 nits for HDR.
The picture quality also doesn't suffer from much deterioration when viewed from any angle because the panel has a really wide viewing angle. It’s also capable of maintaining the same picture quality in bright environments, thanks to its high peak brightness levels and great handling of reflections.
Con Poor viewing angle
The quality of the picture degrades quite a lot when looking at the TV from the side – the brightness decreases, and colors get washed out, especially the blacks, which distort when watching even slightly off center.
All Samsung TVs run advertisements and the NU7100 is no exception. There is no way to turn them off or disable ad tracking.
Con Not great for HDR content
The NU7100 is best suited for standard-dynamic-range (SDR) content. It won’t be able to handle HDR content because of the weak color gamut and color volume (the amount of colors the TV can display).
Con Misperforms in light-filled environments
The TV’s peak brightness is not too good, so it’s best suited for rooms without a lot of light.
Even though the TV’s reflection handling is very good, it still won’t properly deal with them in brightly-lit rooms.
Con Mobile app has limited functionality
The SmartThings app won’t be able to completely replace the actual remote due to some drawbacks, such as no text input and no app launching possibilities, which are features that are absolutely necessary for a proper remote.
Con May require some color calibration out of the box
Out of the box, the B7A’s white balance might look slightly off to some viewer, so a brief calibration might be required if you notice it. Fortunately, all the optimal color settings are available on the internet and isn’t hard to find.
Con Interface has ads
The B7A's interface includes ads that can’t be removed - there’s no option to disable it. Ads on this TV can be really annoying when compared to other smart TVs because they're almost everywhere. There are video ads in LG's Content Store, apps menu, and even voice search results.
Con Below average sound quality
The sound quality of the B7A's built-in speakers is below average. It can't get very loud with the max volume peaking at ~85db, and sound quality it offers does not match the picture quality.
Con Suffers from image retention issues
The main drawback of OLED panels are image retention issues with static images - pixels on the panel gets burned in when the picture doesn't change for extended periods of time. This usually happens with content that has a static image anywhere on the screen, like the logo of TV channels.
As the B7A has an OLED panel, it unfortunately suffers from this problem. There might be some retainment of artifacts for ~15 minutes when this happens, and it usually goes away after watching other content without static images.
There are some cases where normal content won't cut it, which usually happens when the static image has been there for more than some hours. Fortunately, the B7A has a “Pixel Refresher” feature that can recalibrate the screen, which should get rid of any remaining artifacts.