TEST: MOVE SPEED LJ Flash Drive 512GB USB flash drive

Technical data
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Manufacturer	MOVE SPEED
Model number	YSULJ-512G3S
Storage capacity	512 GB (469 GiB)
Read speed	130 MB/s
Write speed	50 MB/s
Connection	USB Typ A+C
Price	ca. 36 USD (= 0,07 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

6 %

Write speed

4 %

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

AS SSD Benchmark

Standard performance test

The standard test was performed using a 1 GB file. A total score of 38 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	110,78 MB/s	67,18 MB/s
4K in megabytes per second	4,97 MB/s	0,22 MB/s
4K-64Thrd in megabytes per second	4,44 MB/s	0,22 MB/s
Access time in milliseconds	1,495 ms	19,072 ms
Score	20	7
Total score	38

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 July 18, 2025 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	66,04 MB/s	16,26 s
Program many small files	18,08 MB/s	77,81 s
Game small and large files	43,37 MB/s	31,84 s

Compression Performance Test

This measures the write and read speed of the MOVE SPEED USB flash drive, depending on the compressibility of the data (according to the manufacturer, these should be 130 MB/s and 50 MB/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	115,55	65,84
SEQ1M Q1T1	115,76	67,40
RND4K Q32T16	8,89	0,45
RND4K Q1T1	5,23	0,40

HD Tune Pro Endurance test

This is a long term test to make full use of the memory capacity. You can see when a cache is full and the writing performance decreases. A test file of 4 GB was written to the medium.

ATTO Disk Benchmark

Here, a 256 MB file is written several times to the 512 GB MOVE SPEED USB flash drive. The I/O block size varies (from 512 bytes to 64 megabytes). The larger the blocks, the faster they were written and read.

SSD-Z Benchmark

Similar to HD Tune, a 500 MB file is written to the 512 GB MOVE SPEED USB flash drive here. The transfer data is displayed. The more constant the line, the better.

The benchmark test was performed on July 18, 2025.
Information about the test system can be found at the bottom of the home page.
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