TEST: SanDisk Ultra Dual Drive 32GB USB flash drive

Technical data
Image
Manufacturer	SanDisk
Model number	SDDDC2-032G-G46
Storage capacity	32 GB (29 GiB)
Read speed	150 MB/s
Write speed	20 MB/s
Connection	USB Typ A+C
Price	ca. 13 AUD (= 0,41 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

45 %

Write speed

38 %

*) 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 50 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	162,50 MB/s	37,61 MB/s
4K in megabytes per second	7,60 MB/s	1,61 MB/s
4K-64Thrd in megabytes per second	6,89 MB/s	1,22 MB/s
Access time in milliseconds	0,395 ms	7,604 ms
Score	31	7
Total score	50

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 April 29, 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	25,31 MB/s	42,44 s
Program many small files	11,02 MB/s	127,71 s
Game small and large files	15,78 MB/s	87,49 s

Compression Performance Test

Here, the writing and reading speed of the the SanDisk USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 150MB/s and 20MB/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	170,28	47,39
SEQ1M Q1T1	173,52	54,93
RND4K Q32T16	10,74	2,13
RND4K Q1T1	10,65	1,72