Samsung QN90D 65" vs Vizio M-Series 55"
Samsung's QN90D dominates with its 65-inch Neo QLED Mini-LED panel delivering exceptional 4000-nits peak brightness, superior HDR performance through Quantum HDR+, and Samsung's Neural Quantum Processor 4K upscaling. Its 4.2.2-channel Object Tracking Sound system with 60W output significantly outperforms Vizio's basic 2.0 stereo setup. Gaming credentials match closely (5ms vs 8ms input lag, both supporting VRR/ALLM), but Samsung's premium build, Tizen ecosystem with triple voice assistants, and Wi-Fi 5 stability justify the investment for enthusiasts. Vizio M-Series offers excellent value at $449—Dolby Vision support, 120Hz native refresh, and newer Wi-Fi 6 make it genuinely capable for casual viewers prioritizing budget. However, the 800-nits brightness ceiling and minimal audio severely limit its performance ceiling. For anyone valuing picture quality and immersive sound, Samsung rewards the investment; budget-conscious buyers with smaller living spaces should choose Vizio.
Full Specifications
| Spec | Samsung QN90D 65" | Vizio M-Series 55" |
|---|---|---|
| Body | ||
| VESA mount | 400 x 400mm | 200 x 200mm |
| Weight | 71.9 lbs | 28.0 lbs |
| Dimensions (w/ stand) | 57.1 x 36.6 x 13.4 inches | 48.3 x 30.4 x 10.6 inches |
| Audio | ||
| Output (watts) | 60 | 20 |
| Speakers | 4.2.2ch Object Tracking Sound+ | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 5 | 8 |
| Display | ||
| HDR | Quantum HDR+, HDR10+, HLG | Dolby Vision, HDR10+, HLG |
| Size | 65" | 55" |
| Type | Neo QLED Mini-LED | Quantum LED |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K UHD) |
| Refresh rate | 120Hz (4K@120Hz native) | 120Hz (native) |
| Brightness (nits) | 4000 | 800 |
| Smart TV | ||
| Os | Tizen OS | SmartCast OS |
| Voice assistant | Bixby, Alexa, Google Assistant | Google Assistant, Apple AirPlay 2, Chromecast |
| Processor | ||
| Chipset | Neural Quantum Processor 4K | IQ Active Processor |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 (802.11ax) |
| Ethernet | ||
| Bluetooth | 5.2 | 5.0 |
| USB ports | 2 | 1 |
| HDMI ports | 4 | 4 |
Category Scores
Pros & Cons
Samsung QN90D 65"
Pros
- Excellent Mini-LED backlighting with over 2,000 dimming zones for deep contrast
- All four HDMI ports support 4K@120Hz — ideal for multi-console gaming setups
- Up to 4,000 nits peak brightness handles even the brightest HDR highlights
- Anti-reflection coating dramatically cuts glare in bright living rooms
- Neural Quantum Processor 4K delivers sharp, accurate upscaling from lower-resolution content
Cons
- Mini-LED blooming can still appear around bright objects on dark backgrounds
- No Dolby Atmos pass-through from the TV's built-in speakers
- Tizen OS interface can feel cluttered with sponsored content and ads
- At $1,799 it is significantly pricier than competing Mini-LED options
Vizio M-Series 55"
Pros
- 120Hz with VRR and 4K@120Hz at under $450 is great for console gamers
- Dolby Vision and HDR10+ dual support
- Four HDMI 2.1 ports — enough for every console and streaming device
- Wi-Fi 6 and Chromecast built-in for fast streaming
- Quantum color delivers better color volume than basic LED
Cons
- SmartCast OS is slow and has fewer apps than Google TV
- 800-nit brightness is adequate but not impressive for HDR
- No local dimming zones — contrast is limited
- Vizio's long-term software support and update track record is inconsistent
Related Comparisons
Explore more in tvs, see all Samsung products or all Vizio products. View full details for the Samsung QN90D 65" or the Vizio M-Series 55".