TEST: Transcend JetFlash 790 32GB USB flash drive

Technical data
Image
Manufacturer	Transcend
Model number	TS32GJF790K
Storage capacity	32 GB (29 GiB)
Read speed	90 MB/s
Write speed	30 MB/s
Connection	USB Typ A
Price	ca. 8 AUD (= 0,25 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

29 %

Write speed

25 %

*) 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 36 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	112,72 MB/s	30,66 MB/s
4K in megabytes per second	5,71 MB/s	0,31 MB/s
4K-64Thrd in megabytes per second	5,06 MB/s	0,32 MB/s
Access time in milliseconds	1,441 ms	12,740 ms
Score	22	4
Total score	36

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	17,40 MB/s	61,72 s
Program many small files	9,39 MB/s	149,91 s
Game small and large files	14,24 MB/s	96,98 s

Compression Performance Test

Here, the writing and reading speed of the the Transcend USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 90MB/s and 30MB/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	110,81	31,00
SEQ1M Q1T1	117,61	42,52
RND4K Q32T16	9,09	1,26
RND4K Q1T1	7,98	0,02