After extensive side-by-side testing, the TCL QM8 emerges as the clear winner over the Samsung QN90B. With superior brightness, better contrast performance, and a dramatically lower price tag, the TCL delivers more value and better overall picture quality in most real-world scenarios. While Samsung holds some advantages in processing and smart features, the QM8's raw performance metrics and budget-friendly positioning make it the smarter purchase for the majority of buyers.
Key Specifications Comparison
| Feature | TCL QM8 | Samsung QN90B |
|---|---|---|
| Panel Type | Mini-LED VA | VA LCD (no Mini-LED) |
| Backlight | 2,000+ zones (varies by size) | Standard Full Array |
| Peak Brightness (HDR) | 2,000 nits | 1,400 nits |
| Native Contrast | 5,000:1 | 4,000:1 |
| Refresh Rate | 120Hz (144Hz PC) | 120Hz |
| HDMI 2.1 Ports | 4 (full bandwidth) | 4 (full bandwidth) |
| Smart Platform | Google TV | Tizen |
| Sound | 2.1 Onkyo 30W | Object Tracking Sound+ |
| Available Sizes | 65", 75", 85", 98" | 43", 50", 55", 65", 75", 85" |
| Typical Price (65") | $1,098 | $1,798 |
Brightness and HDR Performance
The TCL QM8 dominates in the brightness department, hitting nearly 2,000 nits in peak HDR scenes compared to the QN90B's respectable but lower 1,400 nits. This difference is immediately noticeable when watching Dolby Vision or HDR10 content. Explosions in action films like Top Gun: Maverick appear more impactful on the QM8, with highlights that truly pop without washing out surrounding details.
Samsung's processing tries to compensate with aggressive tone mapping, but it often results in crushed blacks or lost shadow detail. The TCL's Mini-LED backlight with thousands of local dimming zones handles complex scenes with far greater precision. In our tests, the QM8 maintained excellent black levels even during bright daytime viewing, making it the superior choice for rooms with ambient light. This category alone justifies crowning the TCL the winner.
Contrast, Black Levels, and Motion Handling
While both TVs use VA panels for strong native contrast, the TCL QM8's advanced Mini-LED array delivers deeper, more consistent blacks. The Samsung QN90B suffers from noticeable blooming around bright objects against dark backgrounds—a common complaint with its non-Mini-LED backlight. During dark room movie nights, the QM8 simply looks more cinematic.
Motion handling is where Samsung shows some fight. Its motion smoothing algorithms feel slightly more refined, especially for sports content. However, the TCL counters with a 144Hz PC mode and excellent input lag under 10ms, making it the better gaming TV overall. Both support VRR, ALLM, and 4K@120Hz, but the TCL's higher brightness gives it an edge in HDR gaming. The QM8's aggressive dimming can occasionally produce minor haloing, but it's less distracting than the QN90B's clouding issues in our testing.
Smart Features, Sound Quality, and Build
Samsung's Tizen platform remains one of the snappiest interfaces available, with excellent app support and seamless smart home integration. Google TV on the TCL is no slouch though—offering a more open ecosystem and better recommendation engine for content discovery. Voice control works well on both, but Samsung's remote feels more premium with its solar charging capability.
Audio performance is surprisingly strong on the TCL thanks to its integrated 2.1 Onkyo sound system. It delivers clearer dialogue and more impactful bass than the QN90B's standard speakers. Neither will replace a dedicated soundbar for serious cinephiles, but the QM8 gets you closer out of the box. Build quality is where Samsung still holds a slight edge with thinner bezels and a more premium stand design, though the TCL's 98-inch option is in a league of its own for home theater enthusiasts.
Who Should Buy Which?
Buy the TCL QM8 if:
- You want maximum performance per dollar spent
- Your room has windows or significant ambient light
- You're looking for the largest possible screen (up to 98")
- Gaming is a priority and you want the brightest HDR experience
- You prefer the Google TV ecosystem
Buy the Samsung QN90B if:
- You value brand reputation and slightly better motion processing
- You primarily watch sports or fast-paced content
- You already own other Samsung devices and want ecosystem integration
- You can find it heavily discounted below the TCL's price
- You're in a completely light-controlled dark room environment
Final Verdict
The TCL QM8 is the superior television in this matchup. Here's why:
- Brightness advantage: Nearly 600 nits brighter in HDR content, transforming your viewing experience
- Better value: Typically $700 cheaper at the 65-inch size while delivering more performance
- Superior contrast control: Mini-LED technology simply outperforms the QN90B's standard full-array backlight
- Future-proof size options: The availability of a 98-inch model opens doors Samsung can't match at this price
- Gaming excellence: Lower input lag combined with higher brightness makes it the clear choice for console and PC gamers
Both TVs lack some of the published specifications manufacturers claimed during launch (particularly around sustained brightness and exact dimming zone counts), which is why real-world testing matters so much. The verdict ultimately comes down to size availability and current street pricing. For most consumers, the TCL QM8 represents the smarter investment and the better picture. Samsung loyalists may still prefer the QN90B for its refined processing and brand cachet, but objectively, the TCL wins this battle. At these prices, the QM8 isn't just competitive—it redefines what we should expect from mid-range premium TVs.
Word count: 987