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Updated January 10, 2024·
If you prioritize overall picture quality, the TCL R646 is a better choice with its higher performance in both dark and bright rooms. It is also the superior option for gaming with its higher refresh rate and also offers excellent movie watching capabilities. However, it is more expensive compared to the Samsung CU8000. The Samsung CU8000 comes at a lower price and boasts better usability with features such as voice commands. It performs decently in bright rooms but is not as capable in dark rooms compared to the TCL R646. Consider the CU8000 if you are on a tighter budget or value smart features. Both TVs are 65 inches, so they provide a comparable large-screen experience. 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 Samsung CU8000 (LCD)
- Very good motion processing
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
5.8
7.9
4.92/10
CONTRAST
8.43/10
6.9/10
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 Samsung CU8000 (LCD) has poor picture quality.
Movies & TV
5.3
7.8
4.92/10
CONTRAST
8.43/10
6.1/10
BLACK UNIFORMITY
6.8/10
6.0/10
UPSCALING
5.9/10
Yes
HDR10 SUPPORT
Yes
Yes
HDR10+ SUPPORT
Yes
No
DOLBY VISION SUPPORT
Yes
The TCL R646 (LCD) is good for movies & TV, while the Samsung CU8000 (LCD) is poor.
The Samsung CU8000 falls short in movie and cinematic TV watching due to its lower contrast, absence of local dimming, and poorer black uniformity, which are critical for deep dark scenes. In contrast, the TCL R646 excels in these areas with a higher contrast ratio, effective local dimming, and better black uniformity, ensuring richer and more immersive cinematic visuals.
Gaming
5.5
8.2
4.9/10
RESPONSE TIME SCORE
8.0/10
8.7/10
INPUT LAG SCORE
7.6/10
8.2/10
MOTION PROCESSING
5.3/10
0.0/100
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 Samsung CU8000 (LCD) is poor.
The Samsung CU8000 has poor response time, which is not ideal for gaming as it can lead to motion blur, whereas the TCL R646 is praised for its very good response time, offering a clearer and more responsive gaming experience. Additionally, while the Samsung CU8000 boasts very good input lag, making it relatively responsive to gaming inputs, the TCL R646 also has good input lag but benefits from a better refresh rate, enhancing the smoothness of fast-moving content.
Cartoons & Animation
5.9
8.4
7.3/10
COLOR GAMUT SCORE
7.6/10
6.9/10
COLOR VOLUME SCORE
7.6/10
6.7/10
SDR BRIGHTNESS SCORE
9.1/10
6.2/10
COLORS OUT OF THE BOX SCORE
7.2/10
6.6/10
GRAY UNIFORMITY
8.0/10
The TCL R646 (LCD) is very good for cartoons & animation, while the Samsung CU8000 (LCD) is poor.
News, Talk, & Other TV
5.7
7.5
6.7/10
SDR BRIGHTNESS SCORE
9.1/10
6.0/10
UPSCALING
5.9/10
The TCL R646 (LCD) is good for news, talk, & other TV, while the Samsung CU8000 (LCD) is poor.
The Samsung CU8000 has fair SDR brightness and lackluster upscaling, which could make it less suitable for watching news and TV shows, especially if content is in a lower resolution. The TCL R646, on the other hand, exhibits excellent SDR brightness and good performance in upscaling, making it more capable of presenting news and other TV programs clearly, even when viewed in a bright room or from varying content sources.
Bright Room
5.9
8.9
5.2/10
VIEWING ANGLE
5.3/10
6.7/10
SDR BRIGHTNESS SCORE
9.1/10
5.5/10
HDR BRIGHTNESS SCORE
8.3/10
5.9/10
REFLECTIONS SCORE
8.1/10
The TCL R646 (LCD) is very good for bright room, while the Samsung CU8000 (LCD) is poor.
The Samsung CU8000 struggles in bright rooms because it has lower SDR and HDR brightness and handles reflections poorly. In contrast, the TCL R646 is much better suited for bright environments due to its higher brightness levels and superior reflection handling.
Cost
$648
$800
$200
$400
$600
$800
$1,000
$1,200
The Samsung CU8000 (LCD) has a price of $648 and the TCL R646 (LCD) costs $800.
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Key similarities
Sports
6.4
6.6
8.2/10
MOTION PROCESSING
5.3/10
60Hz
REFRESH RATE
120Hz
8.7/10
INPUT LAG SCORE
7.6/10
6.0/10
UPSCALING
5.9/10
6.7/10
SDR BRIGHTNESS SCORE
9.1/10
Yes
HLG SUPPORT
Yes
The TCL R646 (LCD) and Samsung CU8000 (LCD) are both only fair for sports.
The Samsung CU8000 has poor response time, which can result in blurring during fast-paced sports, and its poor performance in handling reflections might be an issue in well-lit environments. The TCL R646, while having a very good response time minimizing motion blur, also has limited viewing angles, which can affect the picture quality when viewed from the side.
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How the Samsung CU8000 (LCD) and the TCL R646 (LCD) compare to other TVs
Spec Comparison
 |  | |
| Samsung CU8000 (LCD) | TCL R646 (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$648 | $800 | ||
Brand | |||
Brand | Samsung | TCL | |
Release Date | |||
Release Date | March 4, 2023 | August 2, 2021 | |
Full name | |||
Full name | UN65CU8000 | 65R646 | |
Screen Size | |||
Screen Size | 65" | 65" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | Tizen | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 7/10 | 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 | 5.8/10 | 7.9/10 | |
Bright Room Score | |||
Bright Room Score | 6/10 | 9/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 8.2/10 | |
Movies & TV Score | |||
Movies & TV Score | 5.3/10 | 7.8/10 | |
Sports Score | |||
Sports Score | 6.4/10 | 6.6/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 32.8" x 57.1" x 1" | 33.3" x 56.9" x 3.6" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 34.4" x 57.1" | 35.7" x 56.9" | |
Weight without Stand | |||
Weight without Stand | Unknown | 63.5 lbs | |
VESA Mount | |||
VESA Mount | 400 x 300 | 300 x 300 | |
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 | 4.9/10 | 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 | 20 W | 30 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Yes | |
DTS:X | |||
DTS:X | No | Yes, Bypass only | |
Get a great deal on the Samsung CU8000 (LCD) or the TCL R646 (LCD)
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.
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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