Average Bench: 21.6% (200th of 639)

Based on 2,861 user benchmarks.  Device: VID 05dc PID a838 Model: Lexar USB Flash Drive
Poor: 10%Average: 21.6% Great: 33%

Very poor average bench

The Lexar JumpDrive S25 USB 3.0 32GB averaged 78.3% 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 Mixed IO Speed 1.13MB/s
Avg. 4K Random Write Speed 0.68MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Lexar JumpDrive S25 USB 3.0 32GB is 22.5%. This is a relatively narrow range which indicates that the Lexar JumpDrive S25 USB 3.0 32GB performs reasonably consistently under varying real world conditions.


Avg. 4K Random Read Speed 3.82MB/s
Avg. Sequential Write Speed 29.8MB/s

Average Bench

(Based on 2,861 samples)
Min Avg Max
26.7 Read 80.4 141
4 Write 29.8 49.9
4.47 Mixed 36.1 75.9
16.4 SusWrite 31.9 49.4
52.6% 44.6 MB/s
Min Avg Max
2.3 4K Read 3.82 5.9
0.1 4K Write 0.68 0.9
0.4 4K Mixed 1.13 1.6
75.4% 1.87 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
29GB free, PID a838
Operating at USB 3.0 Speed
SusWrite @10s intervals: 13 26 31 26 26 26 MB/s
Read 115
Write 27.5
Mixed 52.2
SusWrite 24.5
61% 54.7 MB/s
4K Read 3.5
4K Write 0.7
4K Mixed 1.1
74% 1.77 MB/s
25GB free, PID a838
Operating at USB 3.0 Speed
SusWrite @10s intervals: 34 34 34 31 34 34 MB/s
Read 41.3
Write 17.7
Mixed 16.2
SusWrite 33.5
34% 27.2 MB/s
4K Read 3.6
4K Write 0.8
4K Mixed 1.3
85% 1.9 MB/s
26GB free, PID a838
Operating at USB 2.1 Speed
SusWrite @10s intervals: 24 22 23 23 11 17 MB/s
Read 29.8
Write 16.1
Mixed 26.4
SusWrite 19.9
30% 23.1 MB/s
4K Read 2.5
4K Write 0.6
4K Mixed 0.9
60% 1.33 MB/s
2,861 MORE »


MSRP ≈ $13 @ launch in Jan '15
EbayUS LJDS25-32GABNL $1017 mins
AmazonUS $137 months
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How Fast Is Your USB? (Bench your build) Size up your PC in less than a minute.

Welcome to our freeware PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best upgrades.

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USB Flash Drive Rankings (Price vs Performance) June 2021 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]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Best value for money - Value for money is based on real world performance.
  • Fastest real world speed - Real World Speed measures performance for typical consumers.


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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