A comparison of specs, key information, reviews, and best pricing from top retailers
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Company ProductName Specs
Company ProductName Specs
Advantages of the LG B4 (OLED)
- Excellent for dark room
- Excellent for movies & TV
- Very good for sports
- Best in class viewing angle
Advantages of the Samsung QN90A (LCD)
- Best in class for bright room
- Very good for upscaling
Key differences
Picture Quality
8.8
8.1
10/10
CONTRAST
7.00/10
8.1/10
COLOR VOLUME SCORE
8.2/10
WOLED
PANEL TYPE
miniLED FALD
WBC
PANEL SUB-TYPE
VA
The LG B4 (OLED) and Samsung QN90A (LCD) both have very good picture quality, though the LG B4 (OLED) has somewhat better picture quality.
Movies & TV
9.2
8.0
10/10
CONTRAST
7.00/10
10.0/10
BLACK UNIFORMITY
7.0/10
7.0/10
UPSCALING
8.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
Yes
Yes
DOLBY VISION SUPPORT
No
The LG B4 (OLED) is excellent for movies & TV, while the Samsung QN90A (LCD) is very good.
Sports
8.3
7.0
8.0/10
MOTION PROCESSING
8.0/10
120Hz
REFRESH RATE
120Hz
10.0/10
INPUT LAG SCORE
10.0/10
7.0/10
UPSCALING
8.0/10
7.1/10
SDR BRIGHTNESS SCORE
9.4/10
Yes
HLG SUPPORT
Yes
The LG B4 (OLED) is very good for sports, while the Samsung QN90A (LCD) is good.
Gaming
8.9
8.3
9.4/10
RESPONSE TIME SCORE
8.3/10
10.0/10
INPUT LAG SCORE
10.0/10
8.0/10
MOTION PROCESSING
8.0/10
100.0/100
GAMING LOCAL DIMMING
70.0/100
7.5/10
GAME HDR BRIGHTNESS SCORE
9.3/10
The LG B4 (OLED) and Samsung QN90A (LCD) are both very good for gaming, though the LG B4 (OLED) is somewhat better.
News, Talk, & Other TV
8.3
8.9
7.1/10
SDR BRIGHTNESS SCORE
9.4/10
7.0/10
UPSCALING
8.0/10
The Samsung QN90A (LCD) and LG B4 (OLED) are both very good for news, talk, & other TV, though the Samsung QN90A (LCD) is somewhat better.
Bright Room
7.3
9.7
9.5/10
VIEWING ANGLE
6.5/10
7.1/10
SDR BRIGHTNESS SCORE
9.4/10
7.2/10
HDR BRIGHTNESS SCORE
9.3/10
9.2/10
REFLECTIONS SCORE
9.0/10
The Samsung QN90A (LCD) is best in class for bright room, while the LG B4 (OLED) is good.
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Key similarities
Cartoons & Animation
8.7
8.8
8.3/10
COLOR GAMUT SCORE
7.8/10
8.1/10
COLOR VOLUME SCORE
8.2/10
7.1/10
SDR BRIGHTNESS SCORE
9.4/10
8.5/10
COLORS OUT OF THE BOX SCORE
9.5/10
9.5/10
GRAY UNIFORMITY
6.4/10
The Samsung QN90A (LCD) and LG B4 (OLED) are both very good for cartoons & animation.
Cost
$1,300
$1,239
$600
$800
$1,000
$1,200
$1,400
$1,600
$1,800
$2,000
The LG B4 (OLED) has a price of $1,300 and the Samsung QN90A (LCD) costs $1,239.
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How the LG B4 (OLED) and the Samsung QN90A (LCD) compare to other TVs
Spec Comparison
 |  | |
| LG B4 (OLED) | Samsung QN90A (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,300 | $1,239 | ||
Brand | |||
Brand | LG | Samsung | |
Release Date | |||
Release Date | March 1, 2024 | February 3, 2021 | |
Full name | |||
Full name | OLED55B4 | QN55QN90A | |
Screen Size | |||
Screen Size | 55" | 55" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | WebOS | Tizen | |
Sound Quality Score | |||
Sound Quality Score | 7/10 | 8.3/10 | |
NextGen Ready | |||
NextGen Ready | No | Yes | |
HDMI Ports | |||
HDMI Ports | 4 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 8.9/10 | 8.2/10 | |
Bright Room Score | |||
Bright Room Score | 7.4/10 | 9.8/10 | |
Gaming Score | |||
Gaming Score | 9/10 | 8.4/10 | |
Movies & TV Score | |||
Movies & TV Score | 9.3/10 | 8.1/10 | |
Sports Score | |||
Sports Score | 8.3/10 | 7/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 48.3" x 27.9" x 1.8" | 27.8" x 48.3" x 1" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 48.3" x 30.4" x 9.3" | 30.3" x 48.3" | |
Weight without Stand | |||
Weight without Stand | 31.5 lbs | 39.0 lbs | |
VESA Mount | |||
VESA Mount | 300 x 200 | 200 x 200 | |
DISPLAY | |||
|---|---|---|---|
Color Depth | |||
Color Depth | 10 bit | 10 bit | |
Black Frame Insertion | |||
Black Frame Insertion | Yes | Yes | |
Auto Low Latency Mode | |||
Auto Low Latency Mode | Yes | Yes | |
Contrast | |||
Contrast | 10/10 | 7/10 | |
Local Dimming | |||
Local Dimming | 10/10 | 8/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 4.2.2 | |
Speaker Power | |||
Speaker Power | 20 W | 60 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Bypass only | |
DTS:X | |||
DTS:X | Yes | No | |
Get a great deal on the LG B4 (OLED) or the Samsung QN90A (LCD)
About LG
LG, a prominent TV brand from Korea, has played a significant role in popularizing OLED TVs. OLED technology is hailed as the future of TV technology. Their TVs employ WebOS, a proprietary smart TV software that not only offers seamless functionality but also includes gaming-specific features, earning praise from players worldwide. Often regarded as the gateway to unparalleled viewing experiences, LG's mid-range OLEDs come highly recommended, making them a worthwhile investment for those willing to stretch their budget for superior quality.
About Samsung
Samsung, a South Korean electronics manufacturer, holds the title of being the largest global TV vendor in terms of units sold. They offer a diverse lineup of TV products that cater to various budget ranges. A notable achievement in recent years is the development of Quantum Dots, a technology that enhances color reproduction, resulting in richer and more vibrant hues. Samsung TVs are well-regarded for their high manufacturing quality and user-friendly software, making them an excellent choice for consumers seeking an intuitive viewing experience.
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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
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TVs evaluated
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Recommendations made
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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.
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Staff Expert & Software Engineer
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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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