
NEC M551
Score: 76/100
NEC C860Q
Score: 80/100Rankings

The NEC C860Q is an 86" commercial 4K HDR display built for 24/7 digital signage and control-room environments. It offers high image quality, local dimming and robust connectivity, but omits a tuner, touch and wireless casting features.

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 | ![]() | ![]() |
|---|---|---|
55 inches | 86 inchesbest | |
— | 8,294,400 pixelsbest | |
— | 60 Hzbest | |
500 nitsbest | 350 nits | |
8,000best | 1,200 | |
| ↓ lower better | — | 8 msbest |
| ↓ lower better | — | 0.49 mmbest |
| ↓ lower better | 250 W | 230 Wbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Display(5) | ||
Screen Size (inches) | 55 inches | 86 inches |
Resolution (total pixels) (pixels) | 3840x2160 pixels | 8294400 pixels |
Panel Type | IPS | S-IPS |
Brightness (nits) | 500 nits | 350 nits |
Static Contrast Ratio | 8000 | 1200 |
Power & Energy(1) | ||
Typical Power Consumption (W) | 250 W | 230 W |


Products in the top-left offer the best value (high score, low price).

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.

Professional reviewers regard it as a top-tier commercial display with industrial reliability, color accuracy and advanced management features, while noting the lack of PIP and wireless casting.
Everyday users highlight zero failures over long periods and appreciate straightforward integration, though they miss a built-in tuner and interactive features.
“Sharp 4K image quality and vibrant colors”

“Easy integration into existing AV systems”

“Reliable performance in 24/7 kiosk and lobby applications”
