Thread: Which is the limitation to the SD/microSD card size for Garmin devices ?

Neil:
The 32G (1) Ultra Cards that I have are essentially brand new, just purchased them, so you may have a point. The 8G and 16G cards are well used and I have had them for some time. The cards are all SanDisk but it always possible that they are counterfet since I bought them online.
The 32G (1) Ultra card has a number 1 within the letter U. The 16G (4) card is the number 4 within the letter C and the 8G (2) card has the number 2 within the letter C. So the 32G card is part of the new Ultra speed Class. more info here:

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The Nuvi speed comparison is hard to do because the Nuvi 855 normally never shut down. When you do shut it down to change cards the first startup is very long and difficult to measure. I could try it but I would have to put all my JCV and ASR files on the card with the mapsets. I understand the Nuvi 855 is also older and a little different than other Nuvi's