TEST: Samsung DUO Plus 128GB USB flash drive

Technical data
Image
Manufacturer	Samsung
Model number	MUF-128DB/APC
Storage capacity	128 GB (119 GiB)
Read speed	400 MB/s
Write speed	60 MB/s
Connection	USB Typ A+C
Price	ca. 78 AUD (= 0,61 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

39 %

Write speed

9 %

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

AS SSD Benchmark

Standard performance test

The standard test was performed with a 1 GB file. A total score of 156 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	401,51 MB/s	61,87 MB/s
4K in megabytes per second	14,57 MB/s	26,40 MB/s
4K-64Thrd in megabytes per second	15,14 MB/s	28,63 MB/s
Access time in milliseconds	0,108 ms	0,480 ms
Score	70	61
Total score	156

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 January 19, 2021 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	59,99 MB/s	17,90 s
Program many small files	39,07 MB/s	36,01 s
Game small and large files	54,40 MB/s	25,38 s

Compression Performance Test

Here, the writing and reading speed of the the Samsung USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 400MB/s and 60MB/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	424,97	64,44
SEQ1M Q1T1	419,25	64,36
RND4K Q32T16	16,95	25,25
RND4K Q1T1	15,12	27,90