TEST: Lexar JumpDrive F35 64GB USB flash drive

Technical data
Image
Manufacturer	Lexar
Model number	LJDF35-64GBEU
Storage capacity	64 GB (57 GiB)
Read speed	150 MB/s
Write speed	80 MB/s
Connection	USB Typ A
Price	ca. 42 AUD (= 0,66 $ / GB)
Paid link	Buy on Amazon

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Compared to the top performer*

Read speed

64 %

Write speed

29 %

*) 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 96 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	252,21 MB/s	57,48 MB/s
4K in megabytes per second	13,82 MB/s	4,75 MB/s
4K-64Thrd in megabytes per second	16,39 MB/s	5,17 MB/s
Access time in milliseconds	0,343 ms	1,000 ms
Score	55	16
Total score	96

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 December 13, 2022 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	53,91 MB/s	19,92 s
Program many small files	29,69 MB/s	47,39 s
Game small and large files	47,86 MB/s	28,86 s

Compression Performance Test

Here, the writing and reading speed of the the Lexar USB flash driveSSD is measured depending on the compressibility of the data (according to the manufacturer, these should be 150MB/s and 80MB/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	265,44	59,71
SEQ1M Q1T1	263,51	60,19
RND4K Q32T16	19,74	6,04
RND4K Q1T1	12,59	5,34