iOS · Storage benchmark
iPhone 11 Pro Max(iPhone12,5)
Sequential and 4 KiB random read/write performance, measured with Jazz Disk Bench.
Sequential read
755.89MiB/s
Average transfer speed
Sequential write
579.26MiB/s
Average transfer speed
4 KiB random read
22.26MiB/s
5,699 IOPS · Q1T1
4 KiB random write
16.99MiB/s
4,349 IOPS · Q1T1
Every capacity, one place
Results by capacity
| Capacity | Seq. read | Seq. write | 4 KiB read | 4 KiB write | Sample count | Latest measurement | Compare |
|---|---|---|---|---|---|---|---|
| 64 GB | 545.53 | 178.79 | 20.57 | 10.58 | 95 | Compare → | |
| 128 GB | 745.27 | 457.96 | 23.03 | 16.63 | 1 | Compare → | |
| 256 GB | 755.89 | 579.26 | 22.26 | 16.99 | 1,276 | Compare → | |
| 512 GB | 713.41 | 465.63 | 20.49 | 15.51 | 132 | Compare → |
Measurement details
- Data source
- Imported aggregate
- Recorded workload version
- Not recorded in the original aggregate
- Grouping
- Model, capacity and platform
- Sample count
- Number of recorded test runs, not unique devices
Results checked · Speeds in MiB/s · About these measurements
Reading these results
These are average measured speeds for the selected Model, capacity and platform. Sequential tests describe large-file transfers; random Q1T1 tests describe small-block operations. Storage capacity, free space, temperature and background activity can affect results.
Compare individual read and write measurements to match your workload. Read the test methodology or learn why results vary.