- Obtained from: AliExpress
- Price paid: $4.63
- Advertised capacity: 2TB
- Logical capacity: 2,147,483,648,000 bytes
- Physical capacity: 8,489,271,296 bytes
- Fake/skimpy flash: Fake flash
- Speed class markings: U3, V30, A2
- CID data:
- Manufacturer ID: Unknown*
- OEM ID: Unknown*
- Product name: Unknown*
- Product revision: Unknown*
- Serial number: Unknown*
- Manufacture date: Unknown*
- Sequential read speed (MB/sec): 9.98
- Sequential write speed (MB/sec): 9.07
- Random read speed (IOPS/sec): 574.04
- Random write speed (IOPS/sec): 0.79
- Read/write cycles to first error: 1,970
- Read/write cycles to complete failure: 1,970
- Total days to complete failure: 45
- Card reader used: SmartQ Single**
- Package front:
- Package back: Not available
- Card front:
- Card back:
* These values are unknown because I didn’t have the idea to dump the card registers until later in this project; by the time I thought to do it, this card had already died.
** I think. Seeing as how this is one of the first cards I tested, I would have only had SmartQ Single’s at that point in time.
Discussion
Before I go any further: yes, “Sansumg” is misspelled. No, it’s not a typo. This is one of the first cards that I bought off of AliExpress, and I spotted the misspelling immediately — in fact, it was the whole reason I ordered it. The makers of this card even went so far as to try to make their logo look like Samsung’s — taking Samsung’s logo and switching the “M” and “N” around.
Being fake flash, this card did about as abysmally as I expected on its performance tests — maybe even worse. All performance metrics were more than one standard deviation below average. This is not a unique distinction — it’s shared by a few other cards in my collection — however, what does make this card stand apart is the fact that it had the lowest score in the sequential read test out of any of the cards I tested. In fact, not only does it not qualify for any of the performance marks that it carries, but it didn’t even meet any single threshold for any of its performance marks.
I was about to be impressed by how long this card managed to last in its endurance tests; however, it failed just shy of the 2,000 read/write cycle mark. It failed pretty suddenly, and just suddenly stopped responding to commands from the system.
February 25, 2024