Average Bench: 67.2% (7th of 639)

Based on 297 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk Extreme Pro
Poor: 24%Average: 67.2% Great: 132%

Above average average bench

The SanDisk Extreme Pro USB 3.1 128GB averaged 32.7% 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 9.77MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.1 128GB is 108%. 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. 4K Random Read Speed 7.6MB/s
Avg. Sequential Read Speed 129MB/s

Average Bench

(Based on 297 samples)
Min Avg Max
25.9 Read 129 296
13.9 Write 81 251
3.1 Mixed 65.1 188
16.9 SusWrite 95.1 267
118% 92.5 MB/s
Min Avg Max
3.9 4K Read 7.6 11.6
2.45 4K Write 8.47 12.1
3.11 4K Mixed 6.67 10.3
543% 7.58 MB/s
Min Avg Max
8.92 DQ Read 11.9 15.8
5.65 DQ Write 11.3 13.2
6.2 DQ Mixed 9.77 12.8
760% 11 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
119GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 211 212 213 212 156 212 MB/s
Read 228
Write 211
Mixed 143
SusWrite 203
262% 196 MB/s
4K Read 9.2
4K Write 11.1
4K Mixed 9
718% 9.77 MB/s
DQ Read 13.7
DQ Write 12.3
DQ Mixed 11.3
854% 12.4 MB/s
63GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 157 145 128 217 340 232 MB/s
Read 172
Write 164
Mixed 29.7
SusWrite 203
188% 142 MB/s
4K Read 10.3
4K Write 11.7
4K Mixed 7.8
702% 9.93 MB/s
DQ Read 13.8
DQ Write 12.6
DQ Mixed 11.2
861% 12.5 MB/s
297 MORE »


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USB Flash Drive Rankings (Price vs Performance) September 2019 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.

Excellent (edit your comment) Add link

8 months ago.

I get consistent 350MB/s write speeds.


4 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

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The Best.
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Intel Core i5-9600K $225Nvidia GTX 1660-Ti $275Samsung 850 Evo 500GB $90
Intel Core i7-9700K $350Nvidia RTX 2060S (Super) $429Samsung 850 Pro 256GB $230
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $37G.SKILL Trident Z DDR4 3200 C14 4x16GB $799SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $64Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 16GB $24
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