Average Bench: 70.3% (6th of 639)

Based on 193 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk Extreme Pro
Poor: 25%Average: 70.3% Great: 136%

Good average bench

The SanDisk Extreme Pro USB 3.1 128GB averaged 29.7% 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 11.6MB/s
Avg. 4K-64Thread Mixed IO Speed 8.84MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.1 128GB is 111%. 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 8.04MB/s
Avg. Sequential Read Speed 141MB/s

Average Bench

(Based on 193 samples)
Min Avg Max
26.4 Read 141 296
16.2 Write 92.2 262
6.23 Mixed 80.4 207
16.4 SusWrite 104 269
135% 104 MB/s
Min Avg Max
3.28 4K Read 8.04 12.5
2.08 4K Write 8.56 12.3
2.18 4K Mixed 5.97 10.4
524% 7.52 MB/s
Min Avg Max
8.63 DQ Read 12.4 16.1
6.15 DQ Write 11.6 13.2
4.09 DQ Mixed 8.84 13
740% 10.9 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
19GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 83 64 73 79 96 65 MB/s
Read 166
Write 71.5
Mixed 71.6
SusWrite 76.5
116% 96.3 MB/s
4K Read 6
4K Write 7.7
4K Mixed 4.6
441% 6.1 MB/s
19GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 23 40 37 22 42 28 MB/s
Read 123
Write 28
Mixed 24.5
SusWrite 31.9
54% 51.8 MB/s
4K Read 11
4K Write 6.3
4K Mixed 3.5
374% 6.93 MB/s
193 MORE »


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USB Flash Drive Rankings (Price vs Performance) May 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.
  • 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.

Excellent (edit your comment) Add link

4 months ago.

I get consistent 350MB/s write speeds.


17 hrs 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.
Intel Core i7-8700K $356Nvidia GTX 1070 $314Samsung 850 Evo 250GB $92
AMD Ryzen 5 2600 $145Nvidia GTX 1060-6GB $208Samsung 850 Evo 500GB $99
AMD Ryzen 5 1600 $108Nvidia GTX 1080-Ti $808Samsung 850 Pro 256GB $163
Seagate Barracuda 1TB (2016) $44Corsair Vengeance LPX DDR4 3000 C15 2x8GB $90SanDisk Extreme 64GB $128
WD Blue 1TB (2012) $40G.SKILL Trident Z DDR4 3200 C14 4x16GB $651SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $73Corsair Vengeance LPX DDR4 3200 C16 2x8GB $85SanDisk Ultra Fit 32GB $12
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