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Hãy viết đoạn tóm tắt về nội dung bằng tiếng việt kích thích người mua: TCL QM8 Review: TV Value Champ Gets Bigger, Brighter and Better

8.9

TCL QM8 series (2023)

Like

• Relatively affordable
• Excellent overall image quality
• Best-in-class brightness and contrast
• Capable Google TV system

Don’t like

• Not as accurate as some competitors
• Only available in 65-inch size and larger

If you want a big TV with an excellent picture but you don’t want to spend a fortune, the TCL QM8 belongs at the top of your list. This TV is even better than the best TV for the money I tested last year, the TCL 6-series. It delivered superior brightness and contrast, and it manages to keep the price pretty much the same. As long as your size bracket is “65-inch or bigger” and your price range is “not an OLED,” this is my pick for you.

TCL went with Google TV over Roku TV (unfortunately)

Don’t get me wrong, the Google TV operating system is good, it just isn’t as good as Roku. And up until 2023, TCL has been using Roku TV in its flagship mini-LED models like the 6-Series. The company made the switch to Google in the QM8 and other 2023 sets to have “more control” over features and updates, according to a TCL rep I spoke with.

Google TV offers excellent voice results thanks to Google Assistant, along with a well-implemented kids profile mode and parental controls; tight integration with Google apps (in particular YouTube and YouTube TV); and more apps overall than proprietary systems like Samsung and LG, thanks to the Google Play store. Roku is simpler to use in my experience, however, and its search results are better than Google TV’s. 

In my tests on the QM8 Google TV’s system, the responses were quick enough, just as speedy as on the Hisense U8K. As usual with Google, I didn’t love the large chunk of space at the top devoted to promotions of shows and movies on various services. I also wish the “continue watching” row was higher up, rather than placed below the “top picks for you” and apps rows. There were lots of suggestions across various apps but still plenty of content I didn’t care about. 

Ultimately TCL’s choice of Google over Roku isn’t a deal-breaker, in part because there’s an easy and inexpensive solution if you want to use Roku’s system on the QM8 anyway. Just attach a Roku streaming device and use it instead of Google TV.

TCL QM8 features: Mini-LED maxes brightness and dimming

The big difference between the QM8 and cheaper LCD-based TVs is its mini-LED backlight. Mini-LEDs are (surprise!) smaller than standard LEDs, allowing them to be grouped into more local dimming zones. Full-array local dimming, in turn, is the best way to improve picture quality on LCD TVs. It allows the screen to dim and brighten different areas simultaneously. Smaller areas, or more dimming zones, mean more-precise illumination — which ultimately increases contrast, the most important ingredient in a good picture — but they’re not the only factor. 

The QM8 has a true 120Hz refresh rate, which leads to better motion performance than 60Hz TVs. Like most TVs in its class today, the 6-Series uses quantum dots that help improve color compared with non-QD-equipped TVs. And of course it supports both Dolby Vision and HDR10 high dynamic range (HDR) formats (these days, basically the only manufacturer that doesn’t is Samsung). The QM8 also adds Dolby Vision IQ, which works with an ambient light sensor to automatically adjust the picture.

Other features:

• Four HDMI inputs (one with 4K/144Hz, one with 4K/120Hz, one with eARC).
• Analog (composite) AV input.
• USB port (2.0).
• Ethernet (wired internet).
• Headphone jack.
• Optical digital audio output.
• RF (antenna) input.

The biggest step-up in connections compared with the earlier TCL 6-Series Roku TVs is the ability to accept 4K/120Hz input signals, from an Xbox Series X or PlayStation 5, for example. The TV is actually capable of 144Hz input, according to TCL, but that extra bit of refresh isn’t a big deal in my book, and is available only on select PC cards. Other gaming extras are par for the midrange TV course, namely VRR, or variable refresh rate, and ALLM (auto game mode). One of the inputs also supports eARC.

One more feature to file under “not a big deal” is the QM8’s lack of a built-in ATSC 3.0 over-the-air tuner for NextGen TV broadcasts, something found on competing TVs, including the Hisense U8K. Those broadcasts are taking awhile to actually arrive and once they do, you’ll be able to attach an external tuner to watch them if you want. 

TCL QM8 vs. Hisense U8K and others: Picture quality compared

For this comparison I lined up three 65-inch TVs side by side: the Hisense UK8 and the TCL QM8, which cost about the same, and the LG OLED C3, which costs significantly more. I didn’t include other models in the lineup this time, but from past reviews I can say the image quality of the QM8 is significantly better — brighter, with better color and contrast — than the Roku TV Plus Series, Amazon’s Fire TV Omni QLED and the Vizio MQX (all of which cost less) and a bit better than last year’s TCL 6-Series and Hisense U8H. Let’s dive in.

TV and movies: Contrast is the difference between the brightest whites and darkest blacks, and it’s the most important contributor to TV image quality. This TCL TV is an absolute contrast beast. Watching my standard demo montage from the Spears & Munsil 4K Blu-ray, the QM8 delivered visibly brighter highlights than even the Hisense – despite their similar light output measurements – and matched it with a depth of black that was as close to OLED perfection as I’ve seen on any LED LCD-based TV.

On the flip side, I got the impression that the TCLQM8 looked a bit too brilliant in some scenes. The side-by-side images between it and the Hisense gave the TCL the brightness advantage time after time (it was around 200 to 400 nits brighter in the brightest highlights I measured with an LS-100 light meter) but the Hisense and LG C3 OLED both looked just a bit more natural to my eye. Both of those TVs measured more accurate as well, hewing closer to the target EOTF for HDR than the QM8. That said, my eye kept getting drawn back to the TCL’s brighter, more powerful picture.

The QM8 looked incredibly good in my Netflix comparison too. Watching the excellent Our Cosmos documentary revealed its superb contrast once again. Its black levels and shadow detail were second only to the C3 OLED, with minimal blooming, and a step darker than the Hisense, for more visible punch. The shots of deep space, stars and planets looked nearly as impressive as on the OLED, and scenes of the dark jungle were rich with detail and life.

Its brightness was also better, once again. I measured a spot of sunlight peeking through the trees (episode 2, 36:37) and the QM8 outshone the Hisense by nearly 300 nits (1,300 compared with 1,000), and it more than doubled the brightness of the OLED. Other highlights on the TCL were consistently brighter as well. At times its brightness again seemed a bit more intense than natural, and overall I thought the balanced image of the OLED still looked better, but the QM8 certainly has its appeal.

Check out how we test TVs for more details on the Geek box and our TV testing methodology.

Portrait Displays Calman calibration software was used in this review. 

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