Average Bench: 18.4% (225th of 639)

Based on 902 user benchmarks.  Device: VID 05dc PID a838 Model: Lexar USB Flash Drive
Poor: 9%Average: 18.4% Great: 28%

Terrible average bench

The Lexar JumpDrive S25 USB 3.0 16GB averaged 81.5% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 0.67MB/s
Avg. 4K Random Mixed IO Speed 0.56MB/s

Very good consistency

The range of scores (95th - 5th percentile) for the Lexar JumpDrive S25 USB 3.0 16GB is just 19.3%. This is a relatively narrow range which indicates that the Lexar JumpDrive S25 USB 3.0 16GB performs reasonably consistently under varying real world conditions.


Avg. Sequential Write Speed 16.1MB/s
Avg. Sequential Mixed IO Speed 20.6MB/s

Average Bench

(Based on 902 samples)
Min Avg Max
28.6 Read 80.9 134
5.57 Write 16.1 24.2
6.11 Mixed 20.6 39.7
14.4 SusWrite 21 41.8
36.5% 34.6 MB/s
Min Avg Max
2.87 4K Read 4.73 6.91
0.2 4K Write 0.67 0.91
0.19 4K Mixed 0.56 0.76
59.4% 1.99 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
14GB free, PID a838
Operating at USB 3.0 Speed
SusWrite @10s intervals: 23 21 22 22 22 18 MB/s
Read 118
Write 23.5
Mixed 7.8
SusWrite 21.2
41% 42.8 MB/s
4K Read 6.4
4K Write 0.9
4K Mixed 1.6
109% 2.97 MB/s
0GB free, PID a838
Operating at USB 3.0 Speed
SusWrite @10s intervals: 19 22 22 23 22 23 MB/s
Read 113
Write 1.2
Mixed 22.8
SusWrite 21.8
37% 39.6 MB/s
4K Read 4.6
4K Write 0.1
4K Mixed 1.3
65% 2 MB/s
1GB free, PID a838
Operating at USB 2.1 Speed
SusWrite @10s intervals: 15 21 27 27 27 26 MB/s
Read 31.5
Write 0.3
Mixed 13.8
SusWrite 23.8
20% 17.3 MB/s
4K Read 2.5
4K Write 0.7
4K Mixed 0.2
40% 1.13 MB/s
902 MORE »


Approx. $9 @ launch in Jan '15
AmazonUS $228 months
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USB Flash Drive Rankings (Price vs Performance) August 2018 USB Rankings.

We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]


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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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639 Drives (Compared) Thousands of user benchmarks compiled into one comparison list.

See how consistently different USBs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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