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What we think
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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
Picture Quality
6.5
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
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
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
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
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
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
$270
$600
$0
$200
$400
$600
$800
$1,000
The TCL S450R (LCD) has a price of $270 and the TCL R646 (LCD) costs $600.
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Key similarities
Sports
6.1
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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How the TCL S450R (LCD) and the TCL R646 (LCD) compare to other TVs
Spec Comparison
 |  | |
| TCL S450R (LCD) | TCL R646 (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$270 | $600 | ||
Brand | |||
Brand | TCL | TCL | |
Release Date | |||
Release Date | August 1, 2023 | August 1, 2021 | |
Full name | |||
Full name | 50S450R | 55R646 | |
Screen Size | |||
Screen Size | 50" | 55" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | Roku TV | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 6/10 | 10/10 | |
NextGen Ready | |||
NextGen Ready | No | No | |
HDMI Ports | |||
HDMI Ports | 4 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 6.6/10 | 7.9/10 | |
Bright Room Score | |||
Bright Room Score | 6/10 | 9/10 | |
Gaming Score | |||
Gaming Score | 5.7/10 | 8.2/10 | |
Movies & TV Score | |||
Movies & TV Score | 6/10 | 7.8/10 | |
Sports Score | |||
Sports Score | 6.2/10 | 6.6/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
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) | |||
Dimensions with Stand (H x W) | 27.1" x 43.8" | 30.9" x 48.3" | |
Weight without Stand | |||
Weight without Stand | 18.3 lbs | 42.3 lbs | |
VESA Mount | |||
VESA Mount | 200 x 200 | 300 x 300 | |
DISPLAY | |||
|---|---|---|---|
Color Depth | |||
Color Depth | 8 bit | 10 bit | |
Black Frame Insertion | |||
Black Frame Insertion | No | Yes | |
Auto Low Latency Mode | |||
Auto Low Latency Mode | Yes | Yes | |
Contrast | |||
Contrast | 6.4/10 | 8.4/10 | |
Local Dimming | |||
Local Dimming | 3/10 | 6.5/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 2.0 | |
Speaker Power | |||
Speaker Power | 20 W | 30 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Yes | |
DTS:X | |||
DTS:X | No | Yes, 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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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.
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About the TV team
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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
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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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