- Obtained from: Mouser Electronics
- Price paid: $13.93
- Advertised capacity: 8GB
- Logical capacity: 8,040,480,768 bytes
- Physical capacity: 8,040,480,768 bytes
- Fake/skimpy flash: No
- Size of protected area: 50,331,648 bytes (inaccessible)
- Speed class marks: Class 10*, U3, V30, A1
- CID data:
- Manufacturer ID:
0x9f - OEM ID:
0x5449(ASCII:TI) - Product name:
0x5344434954(ASCII:SDCIT) - Product revision:
0x61
- Manufacturer ID:
| Sample # | 1 | 2 | 3 | Average |
|---|---|---|---|---|
| Manufacture date | Jul 2023 | Jul 2023 | Jul 2023 | N/A |
| Serial number | 0x662800f3 | 0x6b2800a7 | 0x6b2800ad | N/A |
| Sequential read speed (MB/sec) | 90.34 | 90.12 | 90.27 | 90.24 |
| Sequential write speed (MB/sec) | 49.49 | 52.57 | 49.49 | 50.50 |
| Random read speed (IOPS/sec) | 2,175.35 | 2,185.79 | 2,176.29 | 2,179.14 |
| Random write speed (IOPS/sec) | 796.46 | 800.83 | 802.68 | 799.99 |
| Number of read/write cycles to first error | Not yet determined | 6,367 | 8,768 | 7,568 |
| Number of read/write cycles to complete failure | Not yet determined | Not yet determined | Not yet determined | Not yet determined |
| Total days to complete failure | Not yet determined | Not yet determined | Not yet determined | Not yet determined |
| Card reader used | JJS CR-UTC4AC | JJS CR-UTC4AC | JJS CR-UTC4AC | N/A |
| Package front |  |  |  | N/A |
| Package back |  |  |  | N/A |
| Card front |  |  |  | N/A |
| Card back |  |  |  | N/A |
Discussion
Well, I seem to be on a quest to see not only which microSD card will endure the best, but also which industrial-grade microSD card will endure the best. I wasn’t able to find any on either Amazon or AliExpress — at least, none that were within my budget (although in hindsight, I realize that I may have not looked hard enough, because there absolutely were), so this card marks the first use of a supplier other than Amazon or AliExpress for this project.
Unlike the SanDisk Industrial 8GB, this card came in retail packaging. However, this card is missing the color-shifting stripe that the other Kingston cards have. If you look at the product pictures, it looks like the 8GB model is the only one that doesn’t have this stripe — the 16GB and larger versions all seem to have it.
So far, I’m actually liking this card. All performance metrics were above average, with write speeds (both sequential and random) being more than one standard deviation above average. The lowest single sequential write score puts it in the 81st percentile, while the lowest single random write score put it in the 88th percentile. This would actually make it faster than the SanDisk Industrial 8GB — and to boot, it’s not skimpy, whereas the SanDisk Industrial 8GB was.
All three samples are currently undergoing endurance testing.
- Sample #1 has survived 7,668 read/write cycles and has not yet experienced any errors.
- Sample #2’s first error was a four sector wide address decoding error during round 6,368. It has survived 10,157 read/write cycles in total so far.
- Sample #3’s first error was a two-sector wide address decoding error during round 8,769. It has survived 10,195 read/write cycles in total so far.
July 20, 2024 (current number of read/write cycles is updated automatically every hour)