Although all the cards worked in the tested devices there are varying performance levels that affect the way the applications work. If my only experience with TomTom GO had been with the Integral 256Mb card I would have been very disappointed with the setup. Transferring data to the cards using the Card reader put in impressive timings for the SanDisk cards, which were not carried through to performance in the application testing. The 512 SD cards were a little slow when used for transferring data to the cards, but once it was there they performed extremely well.
The initial results of the raw speed tests suggested that the SanDisk would be the best and fastest memory-cards. Moving on to the application testing changed my views completely. Whilst the SanDisk cards were by far the fastest for reading serially that was not the case when reading in a random manner.
The application testing showed that in general the larger capacity CF cards all performed well within an tolerance of about 4 seconds to create a route with the exception of the SanDisk which took almost twice as long.
The Digital camera tests showed the expected results mirroring the raw speed tests with Sandisk top for writing, followed by the ATP card. The slowest one in this case was the Lexar.
The SD cards also showed varying results. Interestingly the TomTom GO tests all performed within about 6.5 seconds of each other with the exception of the Integral card which was the worst in all tests of the SD cards. Whilst there was a similar trend different cards performed differently in the different scenarios. Though there was little difference between the fastest cards here. Interestingly there were less differences with the SanDisk cards in this form factor.
The MMC cards matched each other and it really was a coin toss which would be the better of the two.
Compatibility with the different devices was definitely not a problem with any of the cards or devices tested. By this I mean that none of the devices refused to recognise the card or failed with the exception of the Integral card in the Palm T3.
Long Term Testing
These cards have all been used in a variety of devices on a daily basis since August 2004 so they have had a good test in a number of conditions from the dry deserts of Death Valley, Nevada and Arizona, the humid and wet atmosphere of Florida and the Keys, to the cold and frosty delights of the UK in winter. During this time whilst in actual use I never had a single card fail.
How can you help?
Well as I only have a limited number of resources I am unable to confirm the compatability of each and every card/PDA/application combination. This is where you can help us.
If you have a problem with a storage card then please post the details into this topic. Quoting the Make, Type, Size, Serial number, your PDA details, the application you are using.and the problems you experienced.
If you have a card that works well then please post the details into this topic. Quoting the Make, Type, Size, Serial number, your PDA details, the application you are using.