Here you will find a detailed speed, performance and benchmark test review. Tested was the portable SSD Extreme PRO Portable SSD V2 with 2TB (SDSSDE81-2T00-G25) from the brand SanDisk.
| Technical specifications (manufacturer information) | |
| Product image |
|
| Manufacturer | SanDisk |
| Model number | SDSSDE81-2T00-G25 |
| Capacity | 2048 GB (1863 GiB) |
| pSLC cache | 26 GB approx. |
| Read speed | 2000 MB/s |
| Write speed | 2000 MB/s |
| Interface | USB 3.2 Gen 2x2 (20 Gbit/s) |
| Connector | USB Typ C |
| Dimensions (LxWxH) | 112 x 58 x 11.5 mm (=4.41 x 2.28 x 0.45 in) |
| Weight | 79 gram (=23 oz) |
| Controller | ASMedia ASM3242 |
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 1787 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 20 June 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 |
916.55 MB/s |
2.51 s |
| Program typical program folder with many small files |
157.00 MB/s |
44.83 s |
| Game a game folder with small and large files |
574.70 MB/s |
12.02 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: 2000 MB/s and 2000 MB/s) the portable SSD is determined.

| CDM | Read [MB/s] | Write [MB/s] |
|---|---|---|
| SEQ1M Q8T1 |
2,076.22 |
2,083.17 |
| SEQ1M Q1T1 |
1,155.66 |
1,798.55 |
| RND4K Q32T16 |
529.56 |
486.06 |
| RND4K Q1T1 |
33.57 |
79.30 |
| CDM | Read [IOPS] | Write [IOPS] |
|---|---|---|
| SEQ1M Q8T1 |
1,980.00 |
1,986.70 |
| SEQ1M Q1T1 |
1,102.10 |
1,715.20 |
| RND4K Q32T16 |
129,287.00 |
118,668.00 |
| RND4K Q1T1 |
8,194.80 |
19,359.10 |
| CDM | Read [µs] | Write [µs] |
|---|---|---|
| SEQ1M Q8T1 |
4,037.15 |
4,016.95 |
| SEQ1M Q1T1 |
907.00 |
582.67 |
| RND4K Q32T16 |
3,954.94 |
4,309.50 |
| RND4K Q1T1 |
121.88 |
51.52 |
A long-term test was performed to fully utilize the storage. You can see from when a possible cache is full and write performance drops. A test file of 300 GB was written to the medium. After approx. 26 GB, the cache was full and performance was throttled.
The test file could at least be read with an average read speed of 1,548 MB/s and written at 1,541 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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