- Obtained from: Amazon
- Advertised capacity: 32GB
- Logical capacity: 31,267,487,744 bytes
- Physical capacity: 31,267,487,744 bytes
- Fake/skimpy flash: Skimpy (2.29% skimp)
- Protected area: 83,886,080 bytes
- Adjusted skimp: 2.03%
- Speed class markings: U3, V30, A2
- CID data:
- Manufacturer ID:
0x74 - OEM ID:
0x4a60(ASCII:J<) - Product name:
0x3030303030(ASCII:00000) - Product revision:
0x10
- Manufacturer ID:
| Sample # | 1 | 2 | 3 | 4 | 5 | Average |
|---|---|---|---|---|---|---|
| Price paid | $8.99 | $9.00 | $9.00 | $9.00 | $9.00 | $9.00 |
| Manufacture date | Aug 2023 | Aug 2023 | Not yet tested | Not yet tested | Not yet tested | N/A |
| Serial number | 0x14a01498 | 0x14a014ad | Not yet tested | Not yet tested | Not yet tested | N/A |
| Sequential read speed (MB/sec) | 93.45 | 94.17 | Not yet tested | Not yet tested | Not yet tested | 93.81 |
| Sequential write speed (MB/sec) | 27.38 | 28.19 | Not yet tested | Not yet tested | Not yet tested | 27.79 |
| Random read speed (IOPS/sec) | 2,781.65 | 2,764.08 | Not yet tested | Not yet tested | Not yet tested | 2,772.87 |
| Random write speed (IOPS/sec) | 455.89 | 499.68 | Not yet tested | Not yet tested | Not yet tested | 477.79 |
| Read/write cycles to first error | Not yet determined | Not yet determined | Not yet tested | Not yet tested | Not yet tested | Not yet determined |
| Read/write cycles to 0.1% failure threshold | Not yet determined | Not yet determined | Not yet tested | Not yet tested | Not yet tested | Not yet determined |
| Read/write cycles to complete failure | Not yet determined | Not yet determined | Not yet tested | Not yet tested | Not yet tested | Not yet determined |
| Total days to complete failure | Not yet determined | Not yet determined | Not yet tested | Not yet tested | Not yet tested | Not yet determined |
| Card reader used | JJC UTC-4AC | JJC UTC-4AC | Not yet tested | Not yet tested | Not yet tested | N/A |
| Package front |  | N/A | ||||
| Package back | Not available | N/A | ||||
| Card front |  |  | Not yet tested | Not yet tested | Not yet tested | N/A |
| Card back |  |  | Not yet tested | Not yet tested | Not yet tested | N/A |
Discussion
Since Gigastone seems to have multiple lines of cards, I thought it would be good to test out more than just one. It turns out that this one is decent in terms of performance: all performance metrics were above average (with the exception of sequential write speeds, which were slightly below average). Random read speeds were more than one standard deviation above average; however, even this is far short of what would have been needed for the A2 marking it carries. In fact, thanks to its slow sequential write speeds, it failed to meet the threshold for any of the performance marks that it carries. (Again, I’ll throw my standard disclaimer here: perhaps this card would have done better if it had been tested under proper conditions.)
On the endurance front, it’s too early to draw any conclusions just yet:
- Sample #1 has not yet reached the 2,000 read/write cycle mark. It is expected to get there sometime in March 2025.
- Sample #2 has not yet reached the 2,000 read/write cycle mark. It is expected to get there sometime in April 2025.
- Samples #3-#5 are still in the package, waiting to be tested.
February 27, 2025