A COB is known as the Chip on Board appears to the scene when thousands of lumens are required from a single source. A COB led array involves multiple chips mounted on a single common board made up of sapphire or silicon carbide as compared to the multiple chip configuration. COB technology mounts several thousand LED chips within a single metal or ceramic-based board. This innovation allows you to have greater packaging densities of the LED array. Some other advantages of COB lights include low energy consumption, constant uniform light output, and minimal footprints. The COB lights arrangement comprises two contacts and only one circuit.

Advantages of a COB light
If you are looking for the COB light dominance, you can have a look at these listed points:
The size of a COB LED light is best for growing indoor plants.The uniformity between the LED arrays performs well for close distance.The arrangement of one circuit and two contacts makes the design easy.By providing constant light output, less energy is consumed.
Disadvantages of a COB light
Some drawbacks of using COB lights are also mentioned here:
COB LED lights are more expensive and are smaller in size as compared to the quantum Board light.These lights have a low bright spectrum as compared to the quantum Board light.COB lights are not preferable when it comes to energy consumption.These LED lights are more technical and require high maintenance costs.
A quantum Quantum Board Lightboard is a large circuit board which mounts several hundred mid-power LEDs. These LEDs are connected in series with each other to form an intelligent spectrum string. Later, these strings are connected in parallel to drive high voltage and current operations. These boards are an alternative to the COB led grow lights. Quantum boards use less power consumption and span a greater area to cover the cost of additional larger heat sinks.

Advantages of a Quantum Board
A benefit of quantum board samsung 301b over the COB light is the simple thermal management.
Quantum board lights have light uniformity and greater light spread.
quantum boards canada consume less energy. They consume 50 watts for 180+ lumens, while on the other hand, COB lights consume 50 watts for 160-170 lumens.
Disadvantages of a best quantum boards

Quantum board lights are not 100% efficient. Some downsides of using these lights are listed below:
You cannot create the eco farm quantum board on your own. However, you can easily build COBs.
Usually, quantum board lights are out of stock.
Quantum board lights do not provide uniform light, hence some parts receive the low intensity of light.