Average Bench: 49.2% (22nd of 634)

Based on 138 user benchmarks.  Device: VID 05dc PID a212 Model: Lexar USB Flash Drive

Below average average bench

The Lexar USB Flash Drive 128GB averaged 50.8% 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. Sequential Write Speed 98.8MB/s
Avg. Sequential Mixed IO Speed 76.4MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the Lexar USB Flash Drive 128GB is 74.4%. This is a particularly wide range which indicates that the Lexar USB Flash Drive 128GB performs inconsistently under varying real world conditions.


Avg. 4K Random Mixed IO Speed 0.54MB/s
Avg. 4K Random Read Speed 4.96MB/s

Average Bench

(Based on 138 samples)
Min Avg Max
29.9 Read 169 291
19.3 Write 98.8 200
13.9 Mixed 76.4 170
131% 115 MB/s
Min Avg Max
2.49 4K Read 4.96 8.97
0.12 4K Write 0.65 0.98
0.04 4K Mixed 0.54 0.77
58.9% 2.05 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
116GB free, PID a212
Operating at USB 3.0 Speed
Read 286
Write 157
Mixed 26.1
161% 157 MB/s
4K Read 9.87
4K Write 0.32
4K Mixed 0.5
65% 3.56 MB/s
43GB free, PID a212
Operating at USB 3.0 Speed
Read 286
Write 143
Mixed 86.2
186% 172 MB/s
4K Read 5.27
4K Write 0.72
4K Mixed 0.78
71% 2.26 MB/s
48GB free, PID a212
Operating at USB 3.0 Speed
Read 263
Write 153
Mixed 133
212% 183 MB/s
4K Read 4.37
4K Write 0.62
4K Mixed 0.34
49% 1.78 MB/s
79GB free, PID a212
Operating at USB 2.1 Speed
Read 40.5
Write 39.5
Mixed 38.8
51% 39.6 MB/s
4K Read 3.1
4K Write 0.72
4K Mixed 0.58
56% 1.47 MB/s
119GB free, PID a212
Operating at USB 2.1 Speed
Read 32.8
Write 25.2
Mixed 17.4
30% 25.2 MB/s
4K Read 3.94
4K Write 0.7
4K Mixed 0.29
48% 1.65 MB/s
50GB free, PID a212
Operating at USB 2.1 Speed
Read 29.7
Write 23.2
Mixed 18.4
29% 23.8 MB/s
4K Read 1.7
4K Write 0.26
4K Mixed 0.33
26% 0.76 MB/s
138 MORE »
Typical USB Flash Drive 128GB Builds (Compare 143 builds) See popular component choices, score breakdowns and rankings.
Gaming 99%
Nuclear submarine
Desktop 67%
Battle cruiser
Workstation 53%

Motherboard: Gigabyte GA-G1.Assassin2

EDIT WITH CUSTOM PC BUILDER Value: 85% - Excellent Total price: $960

Popular USB Flash Drive 128GB 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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How it works

  • - 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.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
  • - Compare your components to the highest voted in class.
  • - Find the best upgrades.
  • - Share your opinion by voting.
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.

 Frequently Asked Questions

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