TEST: SanDisk Extreme PRO Portable SSD V2 1TB external SSD

Technical data
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Manufacturer	SanDisk
Model number	SDSSDE81-1T00-G25
Storage capacity	1024 GB (931 GiB)
pSLC-Cache	12 GB approx.
Read speed	2000 MB/s
Write speed	2000 MB/s
Interface	USB 3.2 Gen 2x2 (20 Gbit/s)
Connection	USB Typ C
Size (LxWxH)	112 x 58 x 11.5 mm
Weight	79 gram
Price	ca. 110 USD (= 0,11 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

56 %

Write speed

57 %

*) Test result evaluated according to AS SSD Score within the same size.

AS SSD Benchmark

Standard performance test

The standard test was performed using a 5 GB file. A total score of 1817 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	1846,20 MB/s	1918,11 MB/s
4K in megabytes per second	37,84 MB/s	72,76 MB/s
4K-64Thrd in megabytes per second	521,52 MB/s	413,93 MB/s
Access time in milliseconds	0,050 ms	0,248 ms
Score	744	679
Total score	1817

Copy Performance Test

A common everyday situation is simulated here. Three test folders are created:

• ISO (folder with two large files)
• Program (folder with many small files)
• Game (folder with small and large files)

The three folders are copied using the Windows Copy command (the cache remains enabled). The practical test of June 21, 2023 shows the performance for simultaneous write and read operations. The lower the duration, the better the performance.

AS SSD Copy-Benchmark	Transfer rate:	Duration:
ISO two large files	935,03 MB/s	2,46 s
Program many small files	169,83 MB/s	41,45 s
Game small and large files	613,73 MB/s	11,26 s

Compression Performance Test

This measures the write and read speed of the SSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 2000MB/s and 2000MB/s respectively).

CrystalDiskMark Benchmark

Here, two sequential and two random performance tests are performed, similar to the ones performed on the AS SSD.

CDM	Read [MB/s]	Write [MB/s]
SEQ1M Q8T1	2060,19	2093,95
SEQ1M Q1T1	1244,88	1811,38
RND4K Q32T16	466,25	431,17
RND4K Q1T1	36,67	79,32

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 200 GB was written to the medium. After approx. 12 GB, the pSLC-Cache was full and the performance was throttled.
At least the test file could be read with an average write speed of 1634 MB/s and written with 1727 MB/s.

HD Tune Pro Benchmark

HD Tune writes a 5 GB file to the SanDisk external SSD. The transfer data of the read speed is displayed graphically. The minimum, maximum and average values are also determined. The determined access time and burst rate are also displayed.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the SanDisk external SSD. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they can be written and read.

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the SanDisk external SSD here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on June 21, 2023.
Information about the test system can be found at the bottom of the home page.
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