Samsung CU8000 55" vs Vizio M7 Q-Series 55"
The Verdict
Both 55-inch models deliver solid 4K performance at different price points, but the Vizio M7 Q-Series edges ahead with meaningful advantages. Samsung's CU8000 offers excellent value at $399, featuring Crystal UHD LED panel, HDR10+ support, and responsive 12ms input lag suitable for casual gaming. Vizio's M7 Q-Series ($499) counters with double the brightness at 600 nits versus 300 nits, superior Quantum Color LED technology, Dolby Vision compatibility, and Wi-Fi 6 connectivity for faster streaming. Both share identical gaming specs (12ms lag, ALLM) and modest 20W audio, but Vizio's brighter display significantly enhances HDR content visibility and overall picture impact. For content creators or those valuing picture quality, the M7's extra brightness and color accuracy justify the $100 premium. However, budget-conscious buyers seeking competent 4K performance will find Samsung's offering hard to beat. Recommend the Vizio M7 for superior visual performance; choose Samsung for maximum value.
Who Should Buy
Buy the Samsung CU8000 55" if…
- →Very affordable entry into Samsung's 4K smart TV lineup
- →HDR10+ support improves contrast in compatible content
- →Tizen OS is a mature, full-featured smart TV platform
Buy the Vizio M7 Q-Series 55" if…
- →Quantum color at $499 delivers vivid, wide gamut colors
- →Dolby Vision and HDR10+ dual support is rare at this price
- →Local dimming zones improve contrast over basic LED TVs
Category Scores
Pros & Cons
Samsung CU8000 55"
Pros
- Very affordable entry into Samsung's 4K smart TV lineup
- HDR10+ support improves contrast in compatible content
- Tizen OS is a mature, full-featured smart TV platform
- Lightweight and easy to wall-mount at 27 lbs
- Crystal Processor 4K provides decent upscaling from 1080p
Cons
- 60Hz panel — no 120Hz for smooth gaming or sports
- Low peak brightness limits HDR impact
- No VRR or HDMI 2.1 — poor for next-gen consoles
- 20W speakers sound thin — a soundbar is essential
Vizio M7 Q-Series 55"
Pros
- Quantum color at $499 delivers vivid, wide gamut colors
- Dolby Vision and HDR10+ dual support is rare at this price
- Local dimming zones improve contrast over basic LED TVs
- Wi-Fi 6 for fast, reliable streaming
- Lightweight at 29.5 lbs for easy installation
Cons
- 60Hz panel — no 120Hz or VRR for gaming
- SmartCast OS is sluggish and frustrating to navigate
- Only 3 HDMI ports, no HDMI 2.1
- 20W speakers are thin and lacking bass
- 600 nits is modest — HDR highlights don't fully shine
Full Specifications
| Spec | Samsung CU8000 55" | Vizio M7 Q-Series 55" |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 200 x 200mm |
| Weight | 27.1 lbs | 29.5 lbs |
| Dimensions (w/ stand) | 48.8 x 30.8 x 8.8 inches | 48.3 x 30.2 x 9.6 inches |
| Dimensions | — | 48.3 x 28.0 x 3.2 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 12 | 12 |
| Display | ||
| HDR | HDR10+, HLG | Dolby Vision, HDR10+, HDR10, HLG |
| Size | 55" | 55" |
| Type | Crystal UHD LED | Quantum Color LED (VA LCD) |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 60Hz |
| Brightness (nits) | 300 | 600 |
| Smart TV | ||
| Os | Tizen OS | SmartCast (Chromecast built-in) |
| Voice assistant | Bixby, Alexa | Google Assistant, Alexa |
| Processor | ||
| Chipset | Crystal Processor 4K | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 6 |
| Ethernet | ||
| Bluetooth | 5.2 | 5.0 |
| USB ports | 1 | 1 |
| HDMI ports | 3 | 3 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in tvs, see all Samsung products or all Vizio products. View full details for the Samsung CU8000 55" or the Vizio M7 Q-Series 55".