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50S450R
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55R646
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What we think

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The PerfectRec TV team Learn more
Updated April 10, 2024·

If you're on a tight budget and need a more affordable option, the TCL S450R may be suitable for you; however, it generally performs less impressively across the board with fair overall picture quality, gaming, and bright room performance. The R646, while more expensive, offers significantly better picture quality, gaming experience with faster response and lower input lag, and superior performance in both dark and bright rooms. It also features better audio, higher refresh rate, and HDR support which enhances movie-watching. If gaming or enjoying movies in high quality are priorities and you can invest more, the R646 is the better option. Give Feedback

this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the TCL S450R (LCD)
  • Good for upscaling
Advantages of the TCL R646 (LCD)
  • Very good for bright room
  • Good for dark room
  • Very good for gaming
  • Good for movies & TV
  • Good for news, talk, & other TV
  • Very good for cartoons & animation
  • Good for use as monitor
  • Very good reflections

Key differences

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Picture Quality

6.5
50S450R
55R646
7.9
6.428571429/10
CONTRAST
8.43/10
6.3/10
COLOR VOLUME SCORE
7.6/10
LED
PANEL TYPE
miniLED FALD
VA
PANEL SUB-TYPE
VA
The TCL R646 (LCD) has good picture quality, while the TCL S450R (LCD) has only fair picture quality.

Movies & TV

6.0
50S450R
55R646
7.8
6.428571429/10
CONTRAST
8.43/10
9.2/10
BLACK UNIFORMITY
6.8/10
7.5/10
UPSCALING
5.9/10
Yes
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
Yes
Yes
DOLBY VISION SUPPORT
Yes
The TCL R646 (LCD) is good for movies & TV, while the TCL S450R (LCD) is only fair.

Gaming

5.7
50S450R
55R646
8.2
6.0/10
RESPONSE TIME SCORE
8.0/10
10.0/10
INPUT LAG SCORE
7.6/10
4.6/10
MOTION PROCESSING
5.3/10
10.0/100
GAMING LOCAL DIMMING
70.0/100
5.8/10
GAME HDR BRIGHTNESS SCORE
8.7/10
The TCL R646 (LCD) is very good for gaming, while the TCL S450R (LCD) is poor.

Cartoons & Animation

6.0
50S450R
55R646
8.4
5.9/10
COLOR GAMUT SCORE
7.6/10
6.3/10
COLOR VOLUME SCORE
7.6/10
6.3/10
SDR BRIGHTNESS SCORE
9.1/10
6.6/10
COLORS OUT OF THE BOX SCORE
7.2/10
5.8/10
GRAY UNIFORMITY
8.0/10
The TCL R646 (LCD) is very good for cartoons & animation, while the TCL S450R (LCD) is only fair.

News, Talk, & Other TV

6.4
50S450R
55R646
7.5
6.3/10
SDR BRIGHTNESS SCORE
9.1/10
7.5/10
UPSCALING
5.9/10
The TCL R646 (LCD) is good for news, talk, & other TV, while the TCL S450R (LCD) is only fair.

Bright Room

6.0
50S450R
55R646
8.9
5.1/10
VIEWING ANGLE
5.3/10
6.3/10
SDR BRIGHTNESS SCORE
9.1/10
5.6/10
HDR BRIGHTNESS SCORE
8.3/10
6.3/10
REFLECTIONS SCORE
8.1/10
The TCL R646 (LCD) is very good for bright room, while the TCL S450R (LCD) is only fair.

Cost

$260
50S450R
55R646
$600
Product image
Product image

$0

$200

$400

$600

$800

$1,000

The TCL S450R (LCD) has a price of $260 and the TCL R646 (LCD) costs $600.
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Key similarities

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Sports

6.1
50S450R
55R646
6.6
4.6/10
MOTION PROCESSING
5.3/10
60Hz
REFRESH RATE
120Hz
10.0/10
INPUT LAG SCORE
7.6/10
7.5/10
UPSCALING
5.9/10
6.3/10
SDR BRIGHTNESS SCORE
9.1/10
Yes
HLG SUPPORT
Yes
The TCL R646 (LCD) and TCL S450R (LCD) are both only fair for sports.

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We’re constantly working to improve.

How the TCL S450R (LCD) and the TCL R646 (LCD) compare to other TVs

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Spec Comparison

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TCL S450R (LCD)TCL R646 (LCD)
TCL S450R (LCD)TCL R646 (LCD)

GENERAL

Price
$260
$600
Brand
TCLTCL
Release Date
August 1, 2023August 1, 2021
Full name
50S450R55R646
Screen Size
50"55"
Screen Resolution
4K4K

TV FEATURES

Operating System
Roku TVAndroid TV
Sound Quality Score
6/1010/10
NextGen Ready
NoNo
HDMI Ports
44
Coax Ports
11

DISPLAY QUALITY SCORES

Picture Quality Score
6.6/107.9/10
Bright Room Score
6/109/10
Gaming Score
5.7/108.2/10
Movies & TV Score
6/107.8/10
Sports Score
6.2/106.6/10

PHYSICAL

Dimensions w/o Stand (H x W x D)
25.4" x 43.8" x 3.2"28.5" x 48.3" x 3.6"
Dimensions with Stand (H x W)
27.1" x 43.8"30.9" x 48.3"
Weight without Stand
18.3 lbs42.3 lbs
VESA Mount
200 x 200300 x 300

DISPLAY

Color Depth
8 bit10 bit
Black Frame Insertion
NoYes
Auto Low Latency Mode
YesYes
Contrast
6.4/108.4/10
Local Dimming
3/106.5/10

SOUND

Speaker Setup
2.02.0
Speaker Power
20 W30 W
Dolby Atmos
YesYes
DTS:X
NoYes, Bypass only

Get a great deal on the TCL S450R (LCD) or the TCL R646 (LCD)

About TCL

TCL, the highly recognizable TV brand from China, has firmly established itself as the second-largest manufacturer in terms of sales volume. Renowned for striking an impressive balance between affordability, picture quality, and design, TCL TVs deliver a compelling overall package. While they have traditionally excelled in the low-end and midrange TV segments, TCL has recently made remarkable strides in the realm of high-end televisions, introducing impressive models that rival top competitors. Most TCL TVs use Roku software which is very user friendly and easy to use, but they have a few other models that use Google TV which has the largest app selection, but is not as user friendly as Roku.

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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
84,330
Recommendations made
12,650
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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