- Obtained from: Walmart
- Price paid: $14.39
- Advertised capacity: 128GB
- Logical capacity: 127,865,454,592 bytes
- Physical capacity: 127,865,454,592 bytes
- Fake/skimpy flash: Skimpy (0.11% skimp)
- Protected area: 134,217,728 bytes
- Adjusted skimp: 0.00026%
- Speed class markings: Class 10*, U3, V30, A2
- CID data:
- Manufacturer ID:
0x03* - OEM ID:
0x5344(ASCII:SD)* - Product name:
0x5352313238(ASCII:SR128) - Product revision:
0x86
- Manufacturer ID:
| Sample # | 1 | 2 | 3 | Average |
|---|---|---|---|---|
| Manufacture date | Jun 2024 | Not yet tested | Not yet tested | N/A |
| Serial number | 0x79920808 | Not yet tested | Not yet tested | N/A |
| Sequential read speed (MB/sec) | 86.72 | Not yet tested | Not yet tested | 86.72 |
| Sequential write speed (MB/sec) | 72.29 | Not yet tested | Not yet tested | 72.29 |
| Random read speed (IOPS/sec) | 1,883.26 | Not yet tested | Not yet tested | 1,883.26 |
| Random write speed (IOPS/sec) | 438.32 | Not yet tested | Not yet tested | 438.32 |
| Read/write cycles to first error | Not yet determined | Not yet tested | Not yet tested | Not yet determined |
| Read/write cycles to 0.1% failure threshold | Not yet determined | Not yet tested | Not yet tested | Not yet tested |
| Read/write cycles to complete failure | Not yet determined | Not yet tested | Not yet tested | Not yet determined |
| Total days to complete failure | Not yet determined | Not yet tested | Not yet tested | Not yet determined |
| Card reader used | JJC CR-UTC4AC | Not yet tested | Not yet tested | N/A |
| Card front |  | Not yet tested | Not yet tested | N/A |
| Card back |  | Not yet tested | Not yet tested | N/A |
| Package front |  | Not yet tested | Not yet tested | N/A |
| Package back |  | Not yet tested | Not yet tested | N/A |
* This manufacturer ID/OEM ID is pretty well known to belong to SanDisk.
Discussion
This card was pointed out to me by a Redditor after someone shared this page to r/SBCGaming (thanks, u/_master_!). Seeing as how it was in my price range, I figured “why not?”
My initial impression is that this is simply a rebranded SanDisk Extreme PRO 128GB — just based off the fact that (a) the product name (in the CID data) has the same “SR” prefix as the SanDisk Extreme PRO 64GB, and (b) the product revision (also in the CID data) is the same. In performance tests, it did about the same as the other SanDisk Extreme PRO’s, except for sequential write speeds — where it outperformed all of them, putting it (as of the time of this writing) in the 97th percentile for sequential write speeds.
On the endurance testing front:
- Sample #1 has survived 2,483 read/write cycles so far and has not yet experienced any errors.
- Samples #2 and #3 are still in the package waiting to be tested.
December 5, 2024