Choosing between the Samsung QMC Series 55" and the LG 55" UR640S UHD Signage TV? Here's how they differ on platforms, screen and price, and which one fits your room.

Short answer: pick the Samsung QMC Series 55" if you want the one that costs less. Pick the LG 55" UR640S UHD Signage TV if you want a 55" UHD signage TV, 400 nits, webOS, budget.
Both are conference room displays; the difference is screen and price.
Side by side
| Samsung QMC Series 55" | LG 55" UR640S UHD Signage TV | |
|---|---|---|
| Price | $1,090 | $1,169 |
| Screen size | 55" class | 55" |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (UHD) |
| Brightness | 500 nits | 400 nits |
| Panel | VA, contrast 4,000:1 | IPS (per LG feature description), contrast 1300:1 |
| Operating hours | 24/7 | 16/7 |
| Speakers | — | 2x 10W |
| Dimensions | 1237.9 x 708.8 x 28.5 mm | — |
| Weight | — | 30.9 lbs / 14.0 kg |
| Warranty | — | 3-year limited |
| Connections | Inputs: 3x HDMI 2.0, 1x DisplayPort 1.2, 2x USB, RJ45, RS232C in/out, Wi-Fi, Bluetooth | Inputs: 2x HDMI (side), HDMI ARC, 1x USB-A, RJ45, RS-232C, Wi-Fi |
Specs are LG and Samsung's published figures. Prices can change.
Which should you buy?
- Choose the Samsung QMC Series 55" if you want the one that costs less. See the Samsung QMC Series 55"
- Choose the LG 55" UR640S UHD Signage TV if you want a 55" UHD signage TV, 400 nits, webOS, budget. See the LG 55" UR640S UHD Signage TV
Also compared
- LG 55" UL3Q-E UHD Signage vs Samsung QMC Series 55"
- Samsung QMC Series 55" vs LG 55" UH5Q-E UHD Signage
- Samsung QMC Series 55" vs LG 65" UL3Q-E UHD Signage
- LG 55" UR640S UHD Signage TV vs ViewSonic CDE5531 55" Smart Commercial Display
- Samsung QBC Series 55" vs LG 55" UR640S UHD Signage TV
Still deciding? Read the Samsung QMC Series 55" guide and the LG 55" UR640S UHD Signage TV guide, see QMC Series 55" alternatives and 55" UR640S UHD Signage TV alternatives, compare them interactively, or send us your room details for a recommendation.
Related guides
- Samsung QBC Series 55" vs LG 55" UR640S UHD Signage TV
- LG 43" UR640S UHD Signage TV vs Samsung QMC Series 43"
- LG 50" UR640S UHD Signage TV vs Samsung QMC Series 50"
- LG 55" UL3Q-E UHD Signage vs Samsung QMC Series 55"
- LG 65" UR640S UHD Signage TV vs Samsung QHC Series 55"
- LG 65" UR640S UHD Signage TV vs Samsung QMC Series 65"
Outfitting several rooms, or reselling? Get a volume quote or apply for wholesale pricing →





