TEST: KEXIN U22 64GB USB flash drive

Technical data
Image
Manufacturer	KEXIN
Model number	U22-Black-64GB
Storage capacity	64 GB (59 GiB)
Read speed	70 MB/s
Write speed	20 MB/s
Connection	USB Typ A+C
Price	ca. 8 AUD (= 0,13 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

32 %

Write speed

15 %

*) 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 66 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	135,85 MB/s	32,00 MB/s
4K in megabytes per second	11,36 MB/s	1,62 MB/s
4K-64Thrd in megabytes per second	14,22 MB/s	1,75 MB/s
Access time in milliseconds	0,361 ms	2,320 ms
Score	39	7
Total score	66

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 09, 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	22,72 MB/s	47,26 s
Program many small files	25,80 MB/s	54,53 s
Game small and large files	29,96 MB/s	46,10 s

Compression Performance Test

Here, the writing and reading speed of the the KEXIN USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 70MB/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	132,13	31,66
SEQ1M Q1T1	141,23	32,92
RND4K Q32T16	17,16	1,32
RND4K Q1T1	11,94	2,30