Average Bench: 58.2% (18th of 639)

Based on 1,094 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk Extreme Pro
Poor: 18%Average: 58.2% Great: 122%

Average average bench

The SanDisk Extreme Pro USB 3.1 128GB averaged 41.8% 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. 4K-64Thread Write Speed 10.9MB/s
Avg. 4K-64Thread Mixed IO Speed 9.08MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.1 128GB is 104%. This is a particularly wide range which indicates that the SanDisk Extreme Pro USB 3.1 128GB performs inconsistently under varying real world conditions.


Avg. Sequential Mixed IO Speed 42.2MB/s
Avg. Sequential Read Speed 119MB/s

Average Bench

(Based on 1,094 samples)
Min Avg Max
21.9 Read 119 288
14.6 Write 55.4 198
2 Mixed 42.2 160
14.4 SusWrite 72.2 247
88% 72.3 MB/s
Min Avg Max
3.79 4K Read 7.95 12.3
0.4 4K Write 7.57 11.9
1.32 4K Mixed 6.61 10.1
512% 7.37 MB/s
Min Avg Max
8.4 DQ Read 10.9 14.6
5.62 DQ Write 10.9 13
4.61 DQ Mixed 9.08 11.9
719% 10.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
77GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 195 192 215 181 162 194 MB/s
Read 266
Write 236
Mixed 177
SusWrite 190
287% 217 MB/s
4K Read 7.8
4K Write 8.1
4K Mixed 5.6
495% 7.17 MB/s
DQ Read 15.1
DQ Write 13.3
DQ Mixed 12.2
923% 13.5 MB/s
1,094 MORE »


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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) October 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.


Added n/a ago.

Good (edit your comment) Add link

17 months ago.

I get consistent 350MB/s write speeds.


2 years ago.

el mas rapido de 250 a 300mb/s

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.

 Frequently Asked Questions

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The Best.
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Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $68SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $38Corsair Vengeance LPX DDR4 3000 C15 2x8GB $75SanDisk Extreme 32GB $28
Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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