Average Bench: 57.5% (18th of 639)

Based on 712 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk Extreme Pro
Poor: 23%Average: 57.5% Great: 118%

Average average bench

The SanDisk Extreme Pro USB 3.1 128GB averaged 42.4% 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 10.8MB/s
Avg. 4K-64Thread Mixed IO Speed 9.12MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.1 128GB is 94.8%. 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 Read Speed 103MB/s
Avg. Sequential Mixed IO Speed 44.7MB/s

Average Bench

(Based on 712 samples)
Min Avg Max
27.4 Read 103 281
15.2 Write 54 201
2.85 Mixed 44.7 150
18.5 SusWrite 74.5 243
86.7% 69.1 MB/s
Min Avg Max
3.49 4K Read 7.63 11.8
0.76 4K Write 7.99 11.8
3.37 4K Mixed 6.58 9.84
524% 7.4 MB/s
Min Avg Max
8.75 DQ Read 11 14.6
5.15 DQ Write 10.8 13.1
6.05 DQ Mixed 9.12 11.9
720% 10.3 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
28GB free, PID 5588
Operating at USB 2.1 Speed
SusWrite @10s intervals: 28 28 28 28 28 28 MB/s
Read 33.1
Write 28.1
Mixed 28.9
SusWrite 28
40% 29.5 MB/s
4K Read 5.7
4K Write 7.1
4K Mixed 5.5
450% 6.1 MB/s
119GB free, PID 5588
Operating at USB 2.1 Speed
SusWrite @10s intervals: 27 22 30 25 32 26 MB/s
Read 38.5
Write 34
Mixed 31.8
SusWrite 26.9
44% 32.8 MB/s
4K Read 8.7
4K Write 6
4K Mixed 6.4
454% 7.03 MB/s
29GB free, PID 5588
Operating at USB 2.1 Speed
SusWrite @10s intervals: 26 22 30 32 31 34 MB/s
Read 39.2
Write 17.9
Mixed 36.5
SusWrite 29
40% 30.6 MB/s
4K Read 8.4
4K Write 4.2
4K Mixed 7.8
439% 6.8 MB/s
712 MORE »


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USB Flash Drive Rankings (Price vs Performance) September 2020 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.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.


Added n/a ago.

Good (edit your comment) Add link

4 months ago.

I get consistent 350MB/s write speeds.


16 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 i5-9400F $145Nvidia GTX 1650S (Super) $170Samsung 850 Evo 120GB $78
Intel Core i7-9700K $300Nvidia RTX 2070S (Super) $500Samsung 860 Evo 250GB $43
Seagate Barracuda 1TB (2016) $43Corsair Vengeance LPX DDR4 3200 C16 2x8GB $66SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $32Corsair Vengeance LPX DDR4 3000 C15 2x8GB $64SanDisk Extreme 32GB $30
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Extreme 16GB $28
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