A comparison of specs, key information, reviews, and best pricing from top retailers
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OLED55C4
Company ProductName Specs











QN55QN90D
Company ProductName Specs











Advantages of the LG C4 (OLED)
  • Excellent for dark room
  • Best in class for gaming
  • Excellent for movies & TV
  • Very good for sports
  • Excellent for news, talk, & other TV
  • Excellent for use as monitor
  • Best in class viewing angle
  • Best in class reflections
Advantages of the Samsung QN90D (LCD)
  • Best in class for bright room

Key differences

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Picture Quality

9.0
OLED55C4
QN55QN90D
8.1
10/10
CONTRAST
7.375/10
8.1/10
COLOR VOLUME SCORE
9.1/10
WOLED
PANEL TYPE
miniLED FALD
WBC
PANEL SUB-TYPE
ADS / IPS
The LG C4 (OLED) has excellent picture quality, while the Samsung QN90D (LCD) has very good picture quality.

Movies & TV

9.2
OLED55C4
QN55QN90D
8.0
10/10
CONTRAST
7.375/10
10.0/10
BLACK UNIFORMITY
6.8/10
8.0/10
UPSCALING
8.0/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
Yes
Yes
DOLBY VISION SUPPORT
No
The LG C4 (OLED) is excellent for movies & TV, while the Samsung QN90D (LCD) is very good.

Sports

8.5
OLED55C4
QN55QN90D
7.0
8.0/10
MOTION PROCESSING
8.0/10
144Hz
REFRESH RATE
144Hz
10.0/10
INPUT LAG SCORE
10.0/10
8.0/10
UPSCALING
8.0/10
8.0/10
SDR BRIGHTNESS SCORE
10.0/10
Yes
HLG SUPPORT
Yes
The LG C4 (OLED) is very good for sports, while the Samsung QN90D (LCD) is good.

Gaming

10.0
OLED55C4
QN55QN90D
8.7
10.0/10
RESPONSE TIME SCORE
7.8/10
10.0/10
INPUT LAG SCORE
10.0/10
8.0/10
MOTION PROCESSING
8.0/10
100.0/100
GAMING LOCAL DIMMING
75.0/100
8.0/10
GAME HDR BRIGHTNESS SCORE
8.9/10
The LG C4 (OLED) is best in class for gaming, while the Samsung QN90D (LCD) is very good.

Bright Room

8.3
OLED55C4
QN55QN90D
9.7
9.5/10
VIEWING ANGLE
6.5/10
8.0/10
SDR BRIGHTNESS SCORE
10.0/10
8.0/10
HDR BRIGHTNESS SCORE
8.8/10
10.0/10
REFLECTIONS SCORE
9.0/10
The Samsung QN90D (LCD) is best in class for bright room, while the LG C4 (OLED) is very good.
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Key similarities

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Cartoons & Animation

8.8
OLED55C4
QN55QN90D
8.8
8.3/10
COLOR GAMUT SCORE
7.5/10
8.1/10
COLOR VOLUME SCORE
9.1/10
8.0/10
SDR BRIGHTNESS SCORE
10.0/10
7.9/10
COLORS OUT OF THE BOX SCORE
8.1/10
10.0/10
GRAY UNIFORMITY
7.7/10
The LG C4 (OLED) and Samsung QN90D (LCD) are both very good for cartoons & animation.

News, Talk, & Other TV

9.0
OLED55C4
QN55QN90D
8.8
8.0/10
SDR BRIGHTNESS SCORE
10.0/10
8.0/10
UPSCALING
8.0/10
Although they have very similar scores, PerfectRec considers LG C4 (OLED) to be excellent for news, talk, & other TV, while the Samsung QN90D (LCD) is very good.

Cost

$1,999
OLED55C4
QN55QN90D
$2,000
Product imageProduct image

$1,000

$1,500

$2,000

$2,500

$3,000

The LG C4 (OLED) has a price of $1,999 and the Samsung QN90D (LCD) costs $2,000.

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How the LG C4 (OLED) and the Samsung QN90D (LCD) compare to other TVs

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Spec Comparison

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LG C4 (OLED)Samsung QN90D (LCD)
LG C4 (OLED)Samsung QN90D (LCD)

GENERAL

Price
$1,999
$2,000
Brand
LGSamsung
Release Date
March 1, 2024March 1, 2024
Full name
OLED55C4QN55QN90D
Screen Size
55"55"
Screen Resolution
4K4K

TV FEATURES

Operating System
WebOSTizen
Sound Quality Score
8/108.3/10
NextGen Ready
NoYes
HDMI Ports
44
Coax Ports
11

DISPLAY QUALITY SCORES

Picture Quality Score
9/108.1/10
Bright Room Score
8.3/109.7/10
Gaming Score
10/108.8/10
Movies & TV Score
9.2/108.1/10
Sports Score
8.5/107/10

PHYSICAL

Dimensions w/o Stand (H x W x D)
48.1" x 27.7" x1.8"32.6" x 56.9" x 1.1"
Dimensions with Stand (H x W)
48.1" x 29.8" x 9.1"35.1" x 56.9"
Weight without Stand
31.1 lbs53.4 lbs
VESA Mount
300 x 200400 x 400

DISPLAY

Color Depth
10 bit10 bit
Black Frame Insertion
YesYes
Auto Low Latency Mode
YesYes
Contrast
10/107.4/10
Local Dimming
10/107/10

SOUND

Speaker Setup
2.24.2.2
Speaker Power
40 W60 W
Dolby Atmos
YesYes
DTS:X
YesNo

Get a great deal on the LG C4 (OLED) or the Samsung QN90D (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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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
125,430
Recommendations made
18,815
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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