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What we think
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Updated April 10, 2024·
If you're on a budget and mainly watch content in a dark room where picture quality isn't your highest priority, the TCL S355 may be suitable for you. However, if you're willing to invest in a TV with better overall picture quality, specifically in bright rooms, and if gaming or watching vibrant movies and sports is important to you, the TCL R646 would be a better choice. While the R646 is more expensive, it offers superior performance for mixed usage, from movies to gaming, with features like high dynamic range (HDR) support and a higher refresh rate for smooth motion. Keep in mind that the R646’s wider range of features will enhance your viewing experience significantly compared to the more budget-friendly S355. 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 S355 (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
5.3
7.9
6.43/10
CONTRAST
8.43/10
5.8/10
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 S355 (LCD) has poor picture quality.
Movies & TV
5.2
7.8
6.43/10
CONTRAST
8.43/10
5.1/10
BLACK UNIFORMITY
6.8/10
7.0/10
UPSCALING
5.9/10
No
HDR10 SUPPORT
Yes
No
HDR10+ SUPPORT
Yes
No
DOLBY VISION SUPPORT
Yes
The TCL R646 (LCD) is good for movies & TV, while the TCL S355 (LCD) is poor.
Gaming
5.5
8.2
6.2/10
RESPONSE TIME SCORE
8.0/10
5.6/10
INPUT LAG SCORE
7.6/10
3.9/10
MOTION PROCESSING
5.3/10
0.0/100
GAMING LOCAL DIMMING
70.0/100
2.5/10
GAME HDR BRIGHTNESS SCORE
8.7/10
The TCL R646 (LCD) is very good for gaming, while the TCL S355 (LCD) is poor.
Cartoons & Animation
5.3
8.4
5.4/10
COLOR GAMUT SCORE
7.6/10
5.8/10
COLOR VOLUME SCORE
7.6/10
5.0/10
SDR BRIGHTNESS SCORE
9.1/10
4.7/10
COLORS OUT OF THE BOX SCORE
7.2/10
5.5/10
GRAY UNIFORMITY
8.0/10
The TCL R646 (LCD) is very good for cartoons & animation, while the TCL S355 (LCD) is poor.
News, Talk, & Other TV
5.6
7.5
5.0/10
SDR BRIGHTNESS SCORE
9.1/10
7.0/10
UPSCALING
5.9/10
The TCL R646 (LCD) is good for news, talk, & other TV, while the TCL S355 (LCD) is poor.
Bright Room
4.7
8.9
6.0/10
VIEWING ANGLE
5.3/10
5.0/10
SDR BRIGHTNESS SCORE
9.1/10
2.5/10
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 S355 (LCD) is poor.
Cost
$168
$600
$0
$200
$400
$600
$800
$1,000
The TCL S355 (LCD) has a price of $168 and the TCL R646 (LCD) costs $600.
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Key similarities
Sports
6.1
6.6
3.9/10
MOTION PROCESSING
5.3/10
60Hz
REFRESH RATE
120Hz
5.6/10
INPUT LAG SCORE
7.6/10
7.0/10
UPSCALING
5.9/10
5.0/10
SDR BRIGHTNESS SCORE
9.1/10
No
HLG SUPPORT
Yes
The TCL R646 (LCD) and TCL S355 (LCD) are both only fair for sports.
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How the TCL S355 (LCD) and the TCL R646 (LCD) compare to other TVs
Spec Comparison
 |  | |
| TCL S355 (LCD) | TCL R646 (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$168 | $600 | ||
Brand | |||
Brand | TCL | TCL | |
Release Date | |||
Release Date | August 2, 2022 | August 1, 2021 | |
Full name | |||
Full name | 40S355 | 55R646 | |
Screen Size | |||
Screen Size | 40" | 55" | |
Screen Resolution | |||
Screen Resolution | 1080P | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | Roku TV | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 5.9/10 | 10/10 | |
NextGen Ready | |||
NextGen Ready | No | No | |
HDMI Ports | |||
HDMI Ports | 3 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 5.3/10 | 7.9/10 | |
Bright Room Score | |||
Bright Room Score | 4.7/10 | 9/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 8.2/10 | |
Movies & TV Score | |||
Movies & TV Score | 5.2/10 | 7.8/10 | |
Sports Score | |||
Sports Score | 6.1/10 | 6.6/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 20.4" x 35.6" x 2.9" | 28.5" x 48.3" x 3.6" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 22.7" x 35.6" | 30.9" x 48.3" | |
Weight without Stand | |||
Weight without Stand | 13.2 lbs | 42.3 lbs | |
VESA Mount | |||
VESA Mount | 100 x 100 | 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 | No | Yes | |
Contrast | |||
Contrast | 6.4/10 | 8.4/10 | |
Local Dimming | |||
Local Dimming | 2.5/10 | 6.5/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 2.0 | 2.0 | |
Speaker Power | |||
Speaker Power | 16 W | 30 W | |
Dolby Atmos | |||
Dolby Atmos | No | Yes | |
DTS:X | |||
DTS:X | No | Yes, Bypass only | |
Get a great deal on the TCL S355 (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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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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