SanDisk Extreme Portable SSD 1TB - Raw Test Data
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Methodology
Raw measurements only. Interpretation is separate.
Test unit & environment
| SSD model | SanDisk Extreme Portable SSD |
|---|---|
| Capacity (GiB) | 931 |
| Serial number | 2547C8405954 |
| Firmware | 0101 |
| Methodology | v0.1 |
| Test period | May 2026 |
| Page updated | 2026-05-17 |
Sequential Write (250GiB)
SLC transition was not detected in the selected attempts; SLC-specific metrics are marked N/A.
| Metric | Average (Median) | Attempt 1 | Attempt 2 | Attempt 3 |
|---|---|---|---|---|
| Avg Speed (MB/s) | 759 | 761 | 757 | 759 |
| Sustained Speed (MB/s) | 759 | 761 | 757 | 759 |
| SLC Speed (MB/s) | N/A | N/A | N/A | N/A |
| Time SLC (sec) | N/A | N/A | N/A | N/A |
| GiB (SLC data) | N/A | N/A | N/A | N/A |
| Time total (sec) | 354 | 353 | 355 | 354 |
Random Read 4K QD1
| Metric | Average (Median) | Attempt 1 | Attempt 2 | Attempt 3 |
|---|---|---|---|---|
| Avg Speed (MB/s) | 14 | 13 | 14 | 14 |
| Latency p99 (ms) | 0.40 | 0.41 | 0.40 | 0.39 |
Sequential Read (250GiB)
| Metric | Average (Median) | Attempt 1 | Attempt 2 | Attempt 3 |
|---|---|---|---|---|
| Avg Speed (MB/s) | 791 | 793 | 783 | 791 |
| Data Size (GiB) | 250 | 250 | 250 | 250 |