If you want better HDR brightness
Choose Hisense U7SG. It scores 4.8 vs 1.2 for HDR brightness, with a 4.2 overall score.
Bottom Line
The TCL Q77K packs excellent gaming connectivity and high refresh rates into an affordable big screen. Its dim HDR, washed-out blacks and blurry 60Hz motion make it much less attractive for serious movies or sports.
Budget-conscious PC and console players who prioritize responsive high-refresh gaming and a large screen in a controlled-light room.
HDR movie enthusiasts, demanding home-theater shoppers, bright-room viewers and people who watch lots of fast 60Hz sports.
Verdict
The TCL Q77K is an unusually gaming-focused budget TV. Its 144Hz 4K capability, high-refresh 1080p modes, wide VRR support, automatic Game Mode and extremely low input lag are rare strengths at this price. Google TV offers plenty of apps, and inexpensive large sizes make it appealing for a PC or console setup. Everyday 4K streams can look sharp, especially in a moderately lit room. But this is not a well-rounded picture-quality bargain: the basic backlight has no local dimming, so HDR highlights look flat and black levels are elevated. Glossy versions struggle with lamps and windows, while detailed 60Hz response tests reveal blur and artifacts that hurt sports and regular TV. Internal sound is serviceable for dialogue but lacks bass. If gaming features and screen size are your priorities, it earns consideration; if a brighter Mini LED alternative costs only modestly more, that upgrade is more compelling for mixed viewing.
Feature Scorecards
Summary
105 reviewed features-
Very positive 4.5-5.036 (34%)
-
Positive 3.5-4.429 (28%)
-
Neutral 2.5-3.416 (15%)
-
Negative 1.5-2.418 (17%)
-
Very negative below 1.56 (6%)
Pros highlights
-
Everyday 4K material can look crisp and colorful for the price, but rigorous testing finds obvious weaknesses in brightness, contrast and HDR.
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The low Costco pricing buys unusually advanced gaming features and large screen options, but picture weaknesses make a cheap Mini LED upgrade worth comparing.
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Fast PC modes are outstanding value at up to 4K/144Hz or 1080p/288Hz on supported sizes, despite slower 60Hz pixel response.
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Native 4K scenes look crisp with excellent fine detail; upscaled text and other tiny details are less dependable.
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Two high-bandwidth ports on the tested 75-inch set enable 4K/144Hz, making high-frame-rate PC play a major attraction.
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24fps movies play without distracting cadence judder, and 1080i film broadcasts also receive strong frame-rate treatment.
Cons highlights
-
Off-center viewing is acceptable for a VA-style set, but saturation and image depth fade noticeably at steeper angles.
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HDR format compatibility is broad, but contrast, color volume and brightness are too limited to make HDR particularly convincing.
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The speakers lack genuine low-end weight and rumble, leaving music and action effects thin.
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Without local dimming, blacks look gray or washed out in darker scenes even though the native panel contrast is serviceable.
-
Cartoons and everyday SDR scenes can look lively, but the limited HDR color range prevents deeply saturated highlights from looking rich.
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There is no zone-by-zone backlight control, so dark areas stay brightened and highlights lack the contrast of Mini LED competitors.
Use Cases
Best for
-
This is a particularly strong budget option for high-frame-rate PC output, as long as blur and HDR limitations are acceptable.
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High-refresh gaming and large screen sizes are unusually affordable, provided premium HDR and all-day brightness are not priorities.
-
The PS5 and Xbox benefit from 4K/120Hz, VRR and low latency, but their HDR games look flatter than on better Mini LED displays.
Not ideal for
-
Bright-room viewingBrightness cannot overcome sunny windows or strong lamps, especially on the glossy smaller sizes; matte 85- and 98-inch versions help reflections but remain dim.
-
Home theater viewingFilm enthusiasts should look higher in the range for deeper blacks, richer HDR and more substantial audio.
Compared With Category Average
Compared with other TVs, this product is above average in warranty, Size-specific gaming refresh limits, high-refresh-rate gaming, near average in Picture detail, viewing angles, below average in cable management, HDR brightness, HDR performance.
Comparison summary
103 compared features-
Above average 0.4+ pts higher38 (37%)
-
Same as average within 0.3 pts26 (25%)
-
Below average 0.4+ pts lower39 (38%)
Largest category differences
| Attribute | This product | Category average | Difference |
|---|---|---|---|
| cable management | 1.0 | 3.6 | -2.6 |
| HDR brightness | 1.2 | 3.5 | -2.4 |
| HDR performance | 1.5 | 3.7 | -2.2 |
| local dimming performance | 1.1 | 3.3 | -2.2 |
| SDR brightness | 1.5 | 3.6 | -2.1 |
| soundstage | 1.8 | 3.7 | -2.0 |
| peak brightness | 1.8 | 3.7 | -1.9 |
| glare resistance | 1.2 | 3.1 | -2.0 |
Consider This Instead
If you want better local dimming performance
Choose Hisense UR8SG. It scores 4.8 vs 1.1 for local dimming performance, with a 4.0 overall score.
If you want better peak brightness
Choose Hisense UR9SG. It scores 4.9 vs 1.8 for peak brightness, with a 4.1 overall score.
If you want better soundstage
Choose Hisense U8QG. It scores 5.0 vs 1.8 for soundstage, with a 4.1 overall score.
Compared in Reviews
Products reviewers directly compared with this model, grouped into quick takeaways.
- Worse: HDR brightness The Q77K is brighter, but its own HDR performance remains unimpressive.
- Better: black levels The QM5K uses local dimming to avoid the Q77K’s raised blacks.
TCL QM6K (2025)
- Better: HDR and all-purpose viewing The QM6K has brighter highlights and deeper blacks with a similar gaming feature set.
- Better: overall mixed-use image quality The QM6K is favored for movies, sports, HDR and brighter rooms.
- Better: HDR and black levels The QM6K is a more convincing HDR option thanks to stronger brightness and contrast.
FAQ
Is the TCL Q77K good for gaming?
Yes. The tested model supports 4K up to 144Hz, VRR and very low input lag on high-bandwidth inputs. HDR and 60Hz motion are weaker than its gaming specifications suggest.
Does the Q77K have local dimming?
No. Its direct-lit backlight cannot darken separate areas, so blacks look raised and HDR highlights lack impact.
Can the Q77K handle a bright living room?
Not particularly well. Its modest brightness and glossy finish on smaller models show glare; the 85- and 98-inch matte variants reduce reflections but are not significantly brighter.
Does the TV support 4K at 120Hz for PS5 and Xbox?
Yes, on the high-bandwidth ports. The tested 75-inch set has two such HDMI inputs, so check your exact size before connecting several fast devices.
How is the Q77K for sports and fast action?
The high refresh rate helps games, but slower 60Hz pixel transitions can blur ball movement, players and scrolling text. Assessments vary, with detailed testing reporting more blur.
Are the built-in speakers good enough?
They can handle speech and casual shows, but bass, spaciousness and loudness are limited. A soundbar is advisable for films and music.
Is the TCL QM6K a better buy?
For HDR, dark movies and bright rooms, yes: its Mini LED dimming and stronger brightness make a noticeable difference. The Q77K makes more sense when savings and high-refresh gaming matter most.
Sample Expert Reviews We Analyzed
These are a few of the reviews included in our analysis.
Video Reviews
Article Reviews
hometechland.com
Our TCL Q77K review covers picture quality, gaming, prices, and how this Costco-exclusive QLED TV compares with the TCL QM6K.
- Review score
- 3.8
dillipweb.com
Do you want a big 4K TV without spending a lot? The TCL Q77K might have caught your eye at Costco. A 65 inch QLED with a 144Hz screen and...
- Review score
- 3.4
rottenwifi.com
TCL Q77K review covering every size, gaming, HDR, sports motion, HDMI ports, reflections, warranty, and whether the QM6K is worth the upgrade.
- Review score
- 3.2
sekin.in
TCL Q77K review covering 50–98-inch models, 144Hz gaming, HDR, motion, HDMI ports, picture quality, QM6K comparisons and which size is worth...
- Review score
- 3.1
rtings.com
The TCL Q77K is an entry-level 4k TV released in 2025 as a Costco exclusive in North America. It's surprisingly feature-packed for the price...
- Review score
- 3.1
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