Hello you all...
It was well known - but worth mentioning - that nearly all Sandisk Flash Cards sold on eBay are fake. Up to now, I had gotten only legitimate Transcend Compact Flash, but recently I received my first fake.
I bought an SLC one, the 300x 8GB, because it's much faster on small files, hence better for user data when not photos, better also if installing an OS or its paging file on it, or the temporary files from an Internet navigator, and so on. SLC is also more reliable; never lost data on an SLC CF card, while I know many destroyed MLC USB keys, with the data lost.
The received part looks very well: same shape precisely, well printed cover... but the speed differs! It doesn't offer the SLC's snappy access to small files, especially to write. More surprisingly, this part is faster on big files... Here are measures of a legitimate 300x and the fake, by Atto, through an almost sufficient noname Sata-to-CF adapter, on an ICH10R.
My best guess is that the hardware is an MLC 400x from Transcend (or equivalent), with fake covers from an SLC 300x, because the 300x sells for much more money. The identity read by Crystal Disk Info is also unexpected, as FTS8GCF300, unknown on the Internet. The added "F" must stand for "Fake"...
Transcend has already confirmed that they have produced no MLC variant of the 300x. (Not even the 16GB? I'm less than sure).
An other surprise: this CF of unknown identity gives its best performance with a Fat32 starting at 1MiB, which is the default formatting by Vista+, but doesn't align the clusters on the Flash lines and pages - probably a trick in beween by the card's microcode of 2010, which doesn't exist on the 300x CF. Related topic: