I use the standard SanDisk SDHC....class 2 and it works very well....other's prefer the faster class 6 cards.
Out of curiosity, have you tried a faster class card? If so, have you noticed a difference on the TT's boot time?
Not sure what the Nav 8.? is exactly or if it's exclusive to the TT920?
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.