TEST: Lexar JumpDrive F35 128GB USB flash drive

Technical data
Image
Manufacturer	Lexar
Model number	LJDF35-128BEU
Storage capacity	128 GB (120 GiB)
Read speed	150 MB/s
Write speed	80 MB/s
Connection	USB Typ A
Price	ca. 68 AUD (= 0,53 $ / GB)
Paid link	Buy on Amazon

Compare Product

Compared to the top performer*

Read speed

26 %

Write speed

10 %

*) 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 92 points was achieved.

AS SSD	Read:	Write:
Seq in megabytes per second	271,07 MB/s	64,18 MB/s
4K in megabytes per second	12,16 MB/s	4,17 MB/s
4K-64Thrd in megabytes per second	14,85 MB/s	4,76 MB/s
Access time in milliseconds	0,349 ms	0,972 ms
Score	54	15
Total score	92

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 November 21, 2021 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	64,38 MB/s	16,68 s
Program many small files	28,62 MB/s	49,16 s
Game small and large files	41,92 MB/s	32,94 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	280,48	65,51
SEQ1M Q1T1	281,24	73,61
RND4K Q32T16	16,16	1,70
RND4K Q1T1	10,60	6,48