16GB / 32GB speed differences

I have the 16GB flash drive for a few months now and use it in FAT32 on my car radio (large temperature fluctuations from -15 ° C to + 45 ° C exposed). I find it convenient that he has no LED, because my car so does not become a flashing disco, but is also evident when it interferes with one or the other. For me, this is certainly not a reason for a point deduction.

However, the sticks have different speeds that let me rather tend to 16GB flash drive. Both drives I tested with the complete capacity with H2testw because I move many large files (with many small files, especially photos and MP3, the speed breaks Experience shows partly massively).

16GB (FAT32):
Write rate: 11.2 Mbyte / s
Read rate: 17.3 Mbyte / s

32GB (NTFS):
Write rate: 6,90 MByte / s
Read rate: 19.7 MB / s

Both sticks are good middle class and are not only suitable for transporting files, for a rich media player, the speeds of to play HD movies. The manufacturer's instructions that are given here are lax exceeded, so I do not understand that to place 3 stars or less, just because one is not enough speed.

For Comparison:
Intenso Rainbow Line 16GB (I use for more than a year, almost every day):
Write rate: 11.7 MB / s
Read rate: 19.2 MB / s