Average Bench: 18.5% (220th of 634)

Based on 790 user benchmarks.  Device: VID 05dc PID a838 Model: Lexar USB Flash Drive

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 0.66MB/s
Avg. 4K Random Mixed IO Speed 0.55MB/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 20.8MB/s

Average Bench

(Based on 790 samples)
Min Avg Max
27.7 Read 81.6 134
5.83 Write 16.1 24
5.78 Mixed 20.8 39.6
37.7% 39.5 MB/s
Min Avg Max
2.82 4K Read 4.74 6.85
0.19 4K Write 0.66 0.91
0.19 4K Mixed 0.55 0.75
58.9% 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
Read 135
Write 22.6
Mixed 36.8
62% 64.9 MB/s
4K Read 5.86
4K Write 0.87
4K Mixed 0.73
76% 2.49 MB/s
2GB free, PID a838
Operating at USB 2.1 Speed
Read 31.1
Write 19.1
Mixed 26
31% 25.4 MB/s
4K Read 3.85
4K Write 0.69
4K Mixed 0.56
57% 1.7 MB/s
8GB free, PID a838
Operating at USB 2.1 Speed
Read 36.1
Write 14.7
Mixed 14.4
24% 21.7 MB/s
4K Read 4.47
4K Write 0.71
4K Mixed 0.58
60% 1.92 MB/s
15GB free, PID a838
Operating at USB 2.1 Speed
Read 27.4
Write 12.8
Mixed 8.5
18% 16.3 MB/s
4K Read 2.7
4K Write 0.62
4K Mixed 0.49
48% 1.27 MB/s
790 MORE »


Approx. $9 @ launch in Jan '15
AmazonUS $223 months
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Typical JumpDrive S25 USB 3.0 16GB Builds (Compare 7,571 builds) See popular component choices, score breakdowns and rankings.
Gaming 125%
Desktop 114%
Workstation 121%

Motherboard: Asus CROSSHAIR VI HERO - $220

EDIT WITH CUSTOM PC BUILDER Value: 96% - Outstanding Total price: $1,643

Popular JumpDrive S25 USB 3.0 16GB compatible motherboards:

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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  • - Download and run UserBenchMark (UBM).
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write and mixed IO.
  • - Checks include: 4k Align, NCQ, TRIM, SATA, USB & S.M.A.R.T.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
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USB Flash Drive Rankings (Price vs Performance) March 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]


Group Test Results

  • Best user rated - User sentiment trumps benchmarks for this comparison.
  • Fastest real world speed - Real World Speed measures performance for typical flash usage patterns.
  • Best value for money - Value for money is based on real world performance, price and capacity.
  • Raw speed comparison - Raw speed readings.


634 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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