Samsung QB65R
Score: 82/100
NEC M551
Score: 76/100Rankings
The Samsung QB65R is a 65-inch commercial 4K LED display with an integrated Tizen signage platform, strong color accuracy and dust-resistant design. It's well-suited for retail, corporate and hospitality use, though its modest brightness and limited ports can be drawbacks.

The NEC MultiSync M551 is a 55-inch commercial-grade 4K UHD LED-backlit LCD display designed for digital signage and video-wall applications. It delivers high brightness, strong contrast, and HDR support while offering extensive remote-management features for 24/7 operation.
| Attribute | Samsung QB65R | ![]() |
|---|---|---|
65 inchesbest | 55 inches | |
8,294,400 pixelsbest | — | |
350 nits | 500 nitsbest | |
4,000 | 8,000best | |
92 %best | — | |
| ↓ lower better | 8 msbest | — |
| ↓ lower better | 0.372 mmbest | — |
| ↓ lower better | 128 Wbest | 250 W |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | Samsung QB65R | ![]() |
|---|---|---|
Display(5) | ||
Screen Size (inches) | 65 inches | 55 inches |
Resolution (total pixels) (pixels) | 8294400 pixels | 3840x2160 pixels |
Panel Type | LED | IPS |
Brightness (nits) | 350 nits | 500 nits |
Static Contrast Ratio | 4000 | 8000 |
Power & Energy(1) | ||
Typical Power Consumption (W) | 128 W | 250 W |

Products in the top-left offer the best value (high score, low price).
Professional reviewers consider the QB65R a dependable, feature-rich commercial display, praising its Tizen platform and color accuracy while noting the modest 350 nits brightness as a limitation.
Everyday users appreciate the ease of installation, sharp visuals, and built-in Wi-Fi, but criticize the brightness in well-lit areas and occasional software sluggishness.

Professional AV integrators view the M551 as a reliable workhorse for digital signage and corporate environments, highlighting its high haze panel, local dimming, and extensive remote-management features. Reviewers commend its brightness consistency, color accuracy, and compatibility with embedded media platforms.
Everyday users appreciate the crisp 4K picture, easy system integration, and sturdy 24/7 operation, but many mention the steep learning curve for remote-control setup and wish for lower power consumption.
“Installation was a breeze and the picture looks great”
“Brightness feels low in our lobby with lots of natural light”
“The built-in signage software saves us from buying an extra media player”