Here you will find a detailed speed, performance and benchmark test review. Tested was the portable SSD Portable SSD with 2TB (SDSSDE30-2T00-G25) from the brand SanDisk.
| Technical specifications (manufacturer information) | |
| Product image |
|
| Manufacturer | SanDisk |
| Model number | SDSSDE30-2T00-G25 |
| Capacity | 2048 GB (1863 GiB) |
| pSLC cache | >300 GB approx. |
| Read speed | 520 MB/s |
| Write speed | 520 MB/s |
| Interface | USB 3.2 Gen 2x1 (10 Gbit/s) |
| Connector | USB Typ C |
| Dimensions (LxWxH) | 96.9 x 46.9 x 9.91 mm (=3.81 x 1.85 x 0.39 in) |
| Weight | 40 gram (=12 oz) |
| Controller | n/a |
We put the SanDisk portable SSD through a detailed test. You can find the test result / test report here:
The standard test was performed with a 5 GB file. A total score of 1273 points was achieved.
A common everyday scenario is simulated here. Three test folders are created:
The three folders are copied using the Windows copy command (cache remains enabled). The real-world test from 14 March 2023 shows performance during simultaneous write and read operations. The lower the duration, the better.
| AS SSD Copy Benchmark | Transfer rate: | Duration: |
|---|---|---|
| ISO two large files |
502.27 MB/s |
4.58 s |
| Program typical program folder with many small files |
134.79 MB/s |
52.22 s |
| Game a game folder with small and large files |
375.68 MB/s |
18.39 s |
Here, speed is measured depending on how compressible the data is.
Similar to AS SSD, two sequential and two random performance tests are carried out here and the write and read speed (manufacturer specs: 520 MB/s and 520 MB/s) the portable SSD is measured.

| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
890.48 |
802.53 |
| SEQ1M Q1T1 |
742.37 |
728.00 |
| RND4K Q32T16 |
455.15 |
385.45 |
| RND4K Q1T1 |
29.70 |
67.68 |
| CDM | Read [IOPS] | Write [IOPS] |
|---|---|---|
| SEQ1M Q8T1 |
849.20 |
765.30 |
| SEQ1M Q1T1 |
708.00 |
694.30 |
| RND4K Q32T16 |
111,120.00 |
94,103.00 |
| RND4K Q1T1 |
7,250.00 |
16,524.20 |
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
9,406.71 |
10,423.30 |
| SEQ1M Q1T1 |
1,411.97 |
1,439.44 |
| RND4K Q32T16 |
4,602.28 |
5,435.38 |
| RND4K Q1T1 |
137.77 |
60.39 |
A long-term test was performed to fully utilize the storage. You can see at what point the cache (if present) becomes full and write performance drops. A test file of 300 GB was written to the medium. The exact cache size could not be determined because the test file did not exhaust (push to the limit) the cache. The test file could at least be read with an average read speed of 852 MB/s and written at 774 MB/s.
HD Tune writes a 5 GB file to the SanDisk portable SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The measured access time and burst rate are also shown.

Here, a 256 MB file is written to the SanDisk portable SSD multiple times. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster writing and reading usually becomes.

Similar to HD Tune, a 500 MB file is written to the SanDisk portable SSD here. The transfer data is displayed. The more consistent the line, the better. Unfortunately, the tool no longer works correctly from around 4,000 MB/s and no line is displayed (and sometimes incorrect min/max data is shown).

You can find information about the test system at the bottom of the homepage.
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