TEST: KEXIN U22 32GB USB flash drive

Technical data
Image
Manufacturer	KEXIN
Model number	U22-Black-32GB
Storage capacity	32 GB (29 GiB)
Read speed	60 MB/s
Write speed	10 MB/s
Connection	USB Typ A+C
Price	ca. 9 USD (= 0,28 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

36 %

Write speed

34 %

*) 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 64 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	137,90 MB/s	25,33 MB/s
4K in megabytes per second	11,75 MB/s	0,99 MB/s
4K-64Thrd in megabytes per second	13,92 MB/s	1,00 MB/s
Access time in milliseconds	0,375 ms	4,310 ms
Score	39	5
Total score	64

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	24,36 MB/s	44,09 s
Program many small files	11,12 MB/s	126,49 s
Game small and large files	19,93 MB/s	69,31 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 60MB/s and 10MB/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	146,34	29,92
SEQ1M Q1T1	147,67	29,70
RND4K Q32T16	17,36	1,00
RND4K Q1T1	12,25	0,98

HD Tune Pro Endurance test

A long-term test was performed here to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases.

HD Tune Pro Benchmark

HD Tune writes a 1 GB file to the 32 GB KEXIN USB flash drive. 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 32 GB KEXIN USB flash drive . 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 32 GB KEXIN USB flash drive here. is written. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on April 09, 2023.
Information about the test system can be found at the bottom of the home page.
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