Average Bench: 77.8% (6th of 639)

Based on 1,154 user benchmarks.  Device: VID 0781 PID 5588 Model: SanDisk ExtremePro
Poor: 19%Average: 77.8% Great: 121%

Good average bench

The SanDisk Extreme Pro USB 3.0 128GB averaged 22.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the SanDisk Extreme Pro USB 3.0 128GB near the top of the comparison list.


Avg. 4K-64Thread Write Speed 11.3MB/s
Avg. 4K Random Write Speed 8.53MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the SanDisk Extreme Pro USB 3.0 128GB is 103%. This is a particularly wide range which indicates that the SanDisk Extreme Pro USB 3.0 128GB performs inconsistently under varying real world conditions.


Avg. 4K Random Read Speed 8.39MB/s
Avg. Sequential Mixed IO Speed 58.2MB/s

Average Bench

(Based on 1,154 samples)
Min Avg Max
15.8 Read 162 250
8.2 Write 102 216
2.5 Mixed 58.2 169
10.4 SusWrite 122 227
140% 111 MB/s
Min Avg Max
2.5 4K Read 8.39 12.4
0.67 4K Write 8.53 11.7
2.17 4K Mixed 6.12 8.8
529% 7.68 MB/s
Min Avg Max
8.5 DQ Read 11 13
8.3 DQ Write 11.3 12.7
4.09 DQ Mixed 8.31 10.6
708% 10.2 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
112GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 55 180 176 167 149 185 MB/s
Read 223
Write 51.5
Mixed 69.1
SusWrite 152
146% 124 MB/s
4K Read 9.3
4K Write 10.8
4K Mixed 7.2
647% 9.1 MB/s
DQ Read 10.2
DQ Write 12
DQ Mixed 9.6
772% 10.6 MB/s
119GB free, PID 5588
Operating at USB 3.0 Speed
SusWrite @10s intervals: 160 158 115 82 82 80 MB/s
Read 168
Write 162
Mixed 110
SusWrite 113
183% 138 MB/s
4K Read 12.1
4K Write 10.8
4K Mixed 8.5
701% 10.5 MB/s
DQ Read 11
DQ Write 10.9
DQ Mixed 9.8
745% 10.6 MB/s
1,154 MORE »


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How Fast Is Your USB? (Bench your build) Size up your PC in less than a minute.

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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How it works

  • - Download and run UserBenchMark.
  • - CPU tests include: integer, floating and string.
  • - GPU tests include: six 3D game simulations.
  • - Drive tests include: read, write, sustained write and mixed IO.
  • - RAM tests include: single/multi core bandwidth and latency.
  • - Reports are generated and presented on userbenchmark.com.
  • - Identify the strongest components in your PC.
  • - See speed test results from other users.
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  • - Explore your best upgrade options with a virtual PC build.
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  • - Share your opinion by voting.
USB Flash Drive Rankings (Price vs Performance) January 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.
  • 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.


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 i5-9600K $218Nvidia GTX 1660S (Super) $240Crucial MX500 250GB $42
Intel Core i5-9400F $155Nvidia GTX 1650S (Super) $160Samsung 850 Evo 120GB $78
Intel Core i7-9700K $356Nvidia RTX 2060 $349Samsung 850 Pro 512GB $249
Seagate Barracuda 1TB (2016) $37Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 64GB $72
WD Blue 1TB (2012) $40Corsair Vengeance LPX DDR4 3000 C15 2x8GB $63SanDisk Extreme 32GB $46
Seagate Barracuda 3TB (2016) $85G.SKILL Trident Z DDR4 3200 C14 4x16GB $653SanDisk Ultra Fit 32GB $16
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