TEST: SanDisk Portable SSD 2TB external SSD

Technical data
Image
Manufacturer	SanDisk
Model number	SDSSDE30-2T00-G25
Storage 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)
Connection	USB Typ C
Size (LxWxH)	96.9 x 46.9 x 9.91 mm
Weight	40 gram
Price	ca. 140 USD (= 0,07 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

43 %

Write speed

39 %

*) 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 1273 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	819,97 MB/s	750,57 MB/s
4K in megabytes per second	25,30 MB/s	61,98 MB/s
4K-64Thrd in megabytes per second	439,81 MB/s	306,37 MB/s
Access time in milliseconds	0,057 ms	0,271 ms
Score	547	443
Total score	1273

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 March 14, 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	502,27 MB/s	4,58 s
Program many small files	134,79 MB/s	52,22 s
Game small and large files	375,68 MB/s	18,39 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 520MB/s and 520MB/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	890,48	802,53
SEQ1M Q1T1	742,37	728,00
RND4K Q32T16	455,15	385,45
RND4K Q1T1	29,70	67,68

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 300 GB was written to the medium. The exact cache size could not be determined, because the test file did not exhaust the cache (brought it to the limit).At least the test file could be read with an average write speed of 852 MB/s and written with 774 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 March 14, 2023.
Information about the test system can be found at the bottom of the home page.
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