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What we think
The PerfectRec TV team Learn more
Updated January 10, 2024·
The Samsung QN90B is at a premium price and offers a higher overall picture quality, better performance in bright rooms, and superior gaming experience compared to the TCL R646 which is at a midrange price. If top-notch gaming support and stronger brightness for well-lit rooms are essential for you, the Samsung QN90B would be a better choice, but at a higher cost. On the other hand, the TCL R646 will save you money and still provide good picture quality and gaming performance, though it won't perform as well in a bright room and isn't as well-rounded in terms of quality control and quality assurance. Also, the TCL has full support for both Dolby Vision and HDR10+, which the Samsung lacks; if you watch a lot of content in these formats, it may be a significant advantage. 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 QN90B (LCD)
- Best in class for bright room
- Very good for movies & TV
- Good for sports
- Excellent for news, talk, & other TV
- Very good for use as monitor
- Very good for upscaling
- Very good motion processing
- Good viewing angle
- Excellent reflections
Advantages of the TCL R646 (LCD)
- The TCL R646 (LCD) has no clear advantages over the Samsung QN90B (LCD).
Key differences
Sports
7.1
6.6
8.0/10
MOTION PROCESSING
5.3/10
120Hz
REFRESH RATE
120Hz
10.0/10
INPUT LAG SCORE
7.6/10
8.0/10
UPSCALING
5.9/10
9.4/10
SDR BRIGHTNESS SCORE
9.1/10
Yes
HLG SUPPORT
Yes
The Samsung QN90B (LCD) is good for sports, while the TCL R646 (LCD) is only fair.
The Samsung QN90B is better for watching sports owing to its superior motion processing and faster response time, ensuring clearer images during fast action. Conversely, the TCL R646, while offering good motion processing, has a slower response time that can result in more blur during rapid movements, which is less ideal for sports enthusiasts.
News, Talk, & Other TV
9.0
7.5
9.4/10
SDR BRIGHTNESS SCORE
9.1/10
8.0/10
UPSCALING
5.9/10
The Samsung QN90B (LCD) is excellent for news, talk, & other TV, while the TCL R646 (LCD) is good.
The Samsung QN90B stands out for its excellent upscaling and SDR brightness, making it a superior choice for watching news and talk shows, as these factors are very important for such content. Conversely, the TCL R646 also offers good performance with excellent SDR brightness and a very good local dimming feature, but it falls slightly short in upscaling, which is essential for enhancing lower-resolution broadcasts and thus impacting its overall suitability for news and talk shows.
Bright Room
9.7
8.9
7.4/10
VIEWING ANGLE
5.3/10
9.4/10
SDR BRIGHTNESS SCORE
9.1/10
9.3/10
HDR BRIGHTNESS SCORE
8.3/10
9.0/10
REFLECTIONS SCORE
8.1/10
The Samsung QN90B (LCD) is best in class for bright room, while the TCL R646 (LCD) is very good.
The Samsung QN90B excels in bright room viewing because it offers excellent SDR and HDR brightness and handles reflections extremely well. On the other hand, the TCL R646 also provides very good performance under these conditions but doesn't reach the same level of brightness and reflection handling as the Samsung QN90B, while offering impressive contrast, color volume, and color gamut.
Cost
$1,578
$1,800
$500
$1,000
$1,500
$2,000
$2,500
$3,000
The Samsung QN90B (LCD) has a price of $1,578 and the TCL R646 (LCD) costs $1,800.
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Key similarities
Picture Quality
8.2
7.9
7.00/10
CONTRAST
8.43/10
8.2/10
COLOR VOLUME SCORE
7.6/10
miniLED FALD
PANEL TYPE
miniLED FALD
VA
PANEL SUB-TYPE
VA
Although they have very similar scores, PerfectRec considers Samsung QN90B (LCD) to have very good picture quality, while the TCL R646 (LCD) has good picture quality.
Movies & TV
8.1
7.8
7.00/10
CONTRAST
8.43/10
7.0/10
BLACK UNIFORMITY
6.8/10
8.0/10
UPSCALING
5.9/10
Yes
HDR10 SUPPORT
Yes
Yes
HDR10+ SUPPORT
Yes
No
DOLBY VISION SUPPORT
Yes
Although they have very similar scores, PerfectRec considers Samsung QN90B (LCD) to be very good for movies & TV, while the TCL R646 (LCD) is good.
The Samsung QN90B is very good for watching movies and cinematic TV because it has high contrast, effective local dimming, and excellent black uniformity, providing deep blacks and vibrant picture quality, especially in dark scenes. The TCL R646, while still good for movies, doesn't quite match the Samsung QN90B in these key areas; however, its colors out of the box and color volume are competent, but it falls short with a comparatively lower performance in local dimming and black uniformity.
Gaming
8.3
8.2
8.3/10
RESPONSE TIME SCORE
8.0/10
10.0/10
INPUT LAG SCORE
7.6/10
8.0/10
MOTION PROCESSING
5.3/10
70.0/100
GAMING LOCAL DIMMING
70.0/100
9.3/10
GAME HDR BRIGHTNESS SCORE
8.7/10
The Samsung QN90B (LCD) and TCL R646 (LCD) are both very good for gaming.
The Samsung QN90B stands out for gaming due to its excellent response time, ensuring smooth motion, and its very good input lag performance, which means faster reactions to on-screen events. The TCL R646 also provides a very good gaming experience, with very good response time and best input lag, which represents minimal delay between your actions and the display's reaction.
Cartoons & Animation
8.8
8.4
7.8/10
COLOR GAMUT SCORE
7.6/10
8.2/10
COLOR VOLUME SCORE
7.6/10
9.4/10
SDR BRIGHTNESS SCORE
9.1/10
9.5/10
COLORS OUT OF THE BOX SCORE
7.2/10
6.6/10
GRAY UNIFORMITY
8.0/10
The Samsung QN90B (LCD) and TCL R646 (LCD) are both very good for cartoons & animation.
The Samsung QN90B and TCL R646 are both very good for cartoons and animation due to their color performance; the Samsung QN90B provides the best colors right out of the box and has a very good overall color gamut, which is very important for vibrant, varied hues. While the TCL R646 also offers good performance in these areas, it may not match the vividness and consistency of color that the Samsung model provides, but it still delivers a very good color gamut that animators will appreciate.
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How the Samsung QN90B (LCD) and the TCL R646 (LCD) compare to other TVs
Spec Comparison
 |  | |
| Samsung QN90B (LCD) | TCL R646 (LCD) |
GENERAL | |||
|---|---|---|---|
| Price | |||
$1,578 | $1,800 | ||
Brand | |||
Brand | Samsung | TCL | |
Release Date | |||
Release Date | March 5, 2022 | August 3, 2021 | |
Full name | |||
Full name | QN75QN90B | 75R646 | |
Screen Size | |||
Screen Size | 75" | 75" | |
Screen Resolution | |||
Screen Resolution | 4K | 4K | |
TV FEATURES | |||
|---|---|---|---|
Operating System | |||
Operating System | Tizen | Android TV | |
Sound Quality Score | |||
Sound Quality Score | 8.3/10 | 10/10 | |
NextGen Ready | |||
NextGen Ready | Yes | No | |
HDMI Ports | |||
HDMI Ports | 4 | 4 | |
Coax Ports | |||
Coax Ports | 1 | 1 | |
DISPLAY QUALITY SCORES | |||
|---|---|---|---|
Picture Quality Score | |||
Picture Quality Score | 8.2/10 | 7.9/10 | |
Bright Room Score | |||
Bright Room Score | 9.8/10 | 9/10 | |
Gaming Score | |||
Gaming Score | 8.4/10 | 8.2/10 | |
Movies & TV Score | |||
Movies & TV Score | 8.1/10 | 7.8/10 | |
Sports Score | |||
Sports Score | 7.2/10 | 6.6/10 | |
PHYSICAL | |||
|---|---|---|---|
Dimensions w/o Stand (H x W x D) | |||
Dimensions w/o Stand (H x W x D) | 37.7" x 65.7" x 1.1" | 37.9" x 65.8" x 3.6" | |
Dimensions with Stand (H x W) | |||
Dimensions with Stand (H x W) | 40.2" x 65.7" | 40.8" x 65.8" | |
Weight without Stand | |||
Weight without Stand | 77.2 lbs | 82.5 lbs | |
VESA Mount | |||
VESA Mount | 400 x 400 | 400 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 | 7/10 | 8.4/10 | |
Local Dimming | |||
Local Dimming | 8/10 | 6.5/10 | |
SOUND | |||
|---|---|---|---|
Speaker Setup | |||
Speaker Setup | 4.2.2 | 2.0 | |
Speaker Power | |||
Speaker Power | 60 W | 34 W | |
Dolby Atmos | |||
Dolby Atmos | Yes | Yes | |
DTS:X | |||
DTS:X | No | Yes, Bypass only | |
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Samsung QN90B (LCD)
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Dig into reviews and images
USA Today
Michael Desjardin | October 2022
"The QN90B delivers one of the brightest pictures we’ve ever seen, showcasing HDR content better than just about every LCD/LED TV on the market. If all you’re planning on doing is watching cable TV, broadcast channels, and a fair share of streaming shows or movies, the QN90B is sure to impress. All four of the QN90B’s HDMI 2.1 ports support 4K gaming at 120fps a centerpiece feature of the Xbox Series X and PlayStation 5."
Get a great deal on the Samsung QN90B (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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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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