Average Bench: 58.9% (17th of 639)

Based on 944 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk Extreme Pro
Poor: 20%Average: 58.9% Great: 123%

Average average bench

The SanDisk Extreme Pro USB 3.1 128GB averaged 41.1% 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 11.3MB/s
Avg. 4K-64Thread Mixed IO Speed 9.45MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.1 128GB is 103%. 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 47.4MB/s
Avg. Sequential Read Speed 116MB/s

Average Bench

(Based on 944 samples)
Min Avg Max
25.9 Read 116 288
14.8 Write 58.5 202
2 Mixed 47.4 160
19 SusWrite 74.2 236
91.7% 74.1 MB/s
Min Avg Max
3.07 4K Read 7.87 11.8
0.94 4K Write 7.79 12
2.5 4K Mixed 6.64 9.81
520% 7.43 MB/s
Min Avg Max
8.5 DQ Read 11.4 14.6
6.96 DQ Write 11.3 13.1
5.78 DQ Mixed 9.45 12.5
750% 10.7 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
88GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 34 48 75 172 96 127 MB/s
Read 280
Write 29.4
Mixed 2
SusWrite 92.1
96% 101 MB/s
4K Read 8.9
4K Write 0.9
4K Mixed 2.6
152% 4.13 MB/s
27GB free, PID 5588
Operating at USB 2.1 Speed
SusWrite @10s intervals: 29 28 29 29 29 29 MB/s
Read 32.6
Write 22.2
Mixed 25.7
SusWrite 28.8
36% 27.3 MB/s
4K Read 6.7
4K Write 6.7
4K Mixed 5.1
426% 6.17 MB/s
944 MORE »


AmazonUS $3856 mins
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USB Flash Drive Rankings (Price vs Performance) May 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

12 months ago.

I get consistent 350MB/s write speeds.


24 months 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

 Best User Rated

The Best.
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Intel Core i5-10600K $210Nvidia RTX 3080 $700Samsung 860 Evo 250GB $40
Seagate Barracuda 1TB (2016) $30Corsair Vengeance LPX DDR4 3200 C16 2x8GB $79SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $30Corsair Vengeance LPX DDR4 3000 C15 2x8GB $102SanDisk Extreme 32GB $28
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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