If you are going to be using the device in areas where the temperature is very low, such as outside in the winter, or in a freezer, as you might find in some labs and other industries, you have to make sure that the chip is still going to work. What is the lowest temperature at which the chip system can function? Knowing this will ensure that you are able to have a system and device that works in your environment.
Keep in mind that different SOCs and chipsets are going to work for different industries better than others will. When you are looking for something that is going to work in your field or industry, you should check to see what your options are and what others have used who were in your position. Having professional help in choosing the right chip system is always a good idea, as the wrong chip system could cause quite a few issues for you.