The Samsung QM55C can be considered an adequate replacement for the QM55B, but there are some differences and improvements you should be aware of:

## Design and build
- The QM55C has an ultra-narrow depth of 28.5 mm, making it one of the slimmest displays in Samsung's UHD series.
- The VESA holes are positioned in the centre, allowing secure and straight mounting in landscape or portrait mode.

## Picture quality
- The QM55C features Dynamic Crystal Colour technology, which offers over a billion shades of colour for immersive picture reproduction.
- The Quantum Processor Lite 4K ensures clear and consistent picture quality and upscales lower resolutions to UHD.

## Ease of use and functions
- The QM55C has a redesigned home UI that offers better usability and quick access to frequently used functions.
- SmartView+ enables wireless screen sharing and facilitates collaboration.
- Smart Calibration ensures consistent brand presence through accurate colour calibration via a mobile app.

## Environmental friendliness
- The QM55C has received various environmental certifications such as Energy Star, EPEAT and TÜV Rheinland Carbon Footprint.

Overall, the QM55C offers many improvements and new functions compared to the QM55B, making it a good replacement, especially if you are looking for a more modern and powerful solution.