LG B4 (OLED)

LG B4 (77" OLED)

LG B4 (OLED)

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BEST RATING
Movies & TV shows:
4.8
PICTURE QUALITY: Very Good8.8/10
MOVIES & TV: Excellent9.2/10
GAMING: Very Good8.9/10
SPORTS: Very Good8.3/10
CARTOONS & ANIMATION: Very Good8.7/10
NEWS & TALK: Very Good8.3/10
BRIGHT ROOM: Good7.3/10








Evaluation

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Pros
  • Very good picture quality
  • Excellent for movies & TV
  • Very good for gaming
  • Very good for sports
  • Very good for cartoons & animation
Cons
  • Pricier than other options

Ratings by Category

Movies & TV shows:
4.8
PerfectRec’s movies & cinematic TV score takes into account the most important TV features for cinematic content. Our score considers the following factors:color gamut, color volume, out-of-the-box color accuracy, local dimming and black uniformity. We also factor in gray uniformity and viewing angles to a lesser degree.
Gaming:
4.7
PerfectRec’s gaming score measures a TV's performance when it comes to playing video games. It is based on several factors that can significantly impact the quality of the gaming experience, including screen response time, input lag, and refresh rate. Screen response time is a critical factor that determines how quickly the TV can transition from one color to the next, while input lag measures the delay between the gaming console output and the TV display. Refresh rate refers to the number of times per second that the TV displays a new frame, which can impact the smoothness of the gaming experience. The gaming score also takes into account two other features: local dimming in gaming mode, which can enhance contrast and picture quality, and black frame insertion, which can reduce screen brightness and create a smoother gaming experience.
Overall Picture:
4.7
PerfectRec developed this proprietary score designed to provide an overall assessment of a display's visual performance. It is a comprehensive metric that takes into account many quantitative measures of picture quality, including: contrast ratio, color gamut, color volume, color accuracy, local dimming, gray uniformity, black uniformity, viewing angle, reflections (glare) and color calibration. By combining multiple factors, this score offers a more nuanced and comprehensive evaluation of a display's capabilities than a single factor.
Cartoons & Animaton:
4.6
PerfectRec’s cartoons & animation score places great importance on several crucial aspects of TV picture quality, such as color gamut, color volume, brightness, and out-of-the-box color accuracy, in addition to good gray uniformity and contrast, to ensure that you can fully enjoy your favorite animated content. Cartoons and animation are characterized by vibrant and colorful imagery, however, accurately displaying this type of content can pose a challenge for TVs, particularly during scenes with complex lighting or subtle color variations.
Sports:
4.5
PerfectRec’s sports score prioritizes response time and refresh rate as the most important factors to ensure clear images of fast-moving scenes. In addition, we consider gray uniformity, which ensures that the turf looks the same across the whole screen, reflections, to avoid distracting ambient light from the action, and viewing angles and brightness, to avoid color distortion and washed-out images, especially when not seated directly in front of the TV.
News, Talk & Reality TV:
4.5
PerfectRec’s news, talk, & other TV score prioritizes upscaling, brightness, contrast, out of the box color accuracy, and screen uniformity. This is because almost all news and talk shows are created in Standard Dynamic Range (SDR) with lower resolutions, such as 720P and 1080P. The purpose of this prioritization is to ensure that lower resolution content looks good on a 4K display and to help you identify which TV will perform best when watching live TV via Cable, Satellite, or Antenna.
Bright Room:
4.2
PerfectRec’s bright room score is a proprietary score of a television's performance in a bright environment, taking into account the following factors: screen brightness, reflections, and color volume. A higher score indicates better TV performance in bright conditions, minimizing glare and producing a more pleasant viewing experience. Brightness is crucial in how well the image displays in direct sunlight, and low reflections reduce glare. Color volume contributes to color vibrancy and depth, which are vital in a bright environment.

Full Specs

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GENERAL

Price
$3,400
Brand
LG
Release Date
March 1, 2024
Full name
OLED77B4
Screen Size
77"
Screen Resolution
4K

TV FEATURES

Operating System
WebOS
Sound Quality Score
PerfectRec logo
7/10
NextGen Ready
No
HDMI Ports
4
Coax Ports
1

DISPLAY QUALITY SCORES

Picture Quality Score
PerfectRec logo
8.9/10
Bright Room Score
PerfectRec logo
7.4/10
Gaming Score
PerfectRec logo
9/10
Movies & TV Score
PerfectRec logo
9.3/10
Sports Score
PerfectRec logo
8.3/10

PHYSICAL

Dimensions w/o Stand (H x W x D)
67.7" x 38.9" x 2.0"
Dimensions with Stand (H x W)
67.7" x 41.6" x 12.6"
Weight without Stand
50.5 lbs
VESA Mount
300 x 200

DISPLAY

Color Depth
10 bit
Black Frame Insertion
Yes
Auto Low Latency Mode
Yes
Contrast
PerfectRec logo
10/10
Local Dimming
PerfectRec logo
10/10

SOUND

Speaker Setup
2.0
Speaker Power
20 W
Dolby Atmos
Yes
DTS:X
Yes

Comparison charts

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Why trust us

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This information was produced and vetted by the PerfectRec TVs team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest TV information and makes it digestible for you.

By the numbers

385
TVs evaluated
33,110
TVs stats compiled
21
Proprietary TVs ratings developed
120,030
Recommendations made
18,005
Consumer hours saved

About the TV team

Joe Golden, Ph.D

CEO and TVs Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.

Jason Lew

Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.

Chandradeep Chowdhury

Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.

Jaime Roldán

TVs Expert
Jaime is a Colombia-based TV expert. He is an electronics engineer with 8 years of experience in the telecom sector and has been making TV recommendations for 12 years.

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