amount of memory in nuvi 650


I have uploaded the normal gpi files from the poi downloaded. What is interesting is that the capacity of the files uploaded is 13.7mb but when it gets to the poi file on the garmin is is listed as 1.2kb. I do not understand this?

Second comment. Let's assume that I did have 13.7 mb downloaded and I also pasted two gpi files to the garmin having 9.7mb which gives me a total of approx. 23.4mb. Then I get the warning that I have no disk capacity let on the garmin. Does this make sense.

Third. If this is so and I get an additional memory card. Will the files on the memory card merge with the files on the internal memory of the garmin?

Thanks for your help. Frank