Average Bench: 16.5% (277th of 639)

Based on 2 user benchmarks.  Device: VID 152d PID 2352 Model: WDC WD40 EFRX-68WT0N0
Poor: 16%Average: 16.5% Great: 17%

Terrible average bench

The WDC WD40 EFRX-68WT0N0 4TB averaged 83.5% 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 Random Write Speed 1.8MB/s
Avg. 4K Random Mixed IO Speed 0.9MB/s

Unknown consistency

There are too few samples to reasonably determine how consistently this USB perfroms. This result should be interpreted with caution.


Avg. 4K Random Read Speed 0.7MB/s
Avg. Sequential Read Speed 29.2MB/s

Average Bench

(Based on 2 samples)
Min Avg Max
28.7 Read 29.2 29.8
28.8 Write 28.9 29
26.1 Mixed 26.5 26.8
30 SusWrite 30 30.1
39.2% 28.7 MB/s
Min Avg Max
0.7 4K Read 0.7 0.7
1.8 4K Write 1.8 1.8
0.9 4K Mixed 0.9 0.9
94.4% 1.13 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
2TB free, PID 2352
Operating at USB 2.0 Speed
SusWrite @10s intervals: 29 29 30 30 30 30 MB/s
Read 29.8
Write 29
Mixed 26.8
SusWrite 30
40% 28.9 MB/s
4K Read 0.7
4K Write 1.8
4K Mixed 0.9
94% 1.13 MB/s
2TB free, PID 2352
Operating at USB 2.0 Speed
SusWrite @10s intervals: 30 30 31 30 30 30 MB/s
Read 28.7
Write 28.8
Mixed 26.1
SusWrite 30.1
39% 28.4 MB/s
4K Read 0.7
4K Write 1.8
4K Mixed 0.9
94% 1.13 MB/s
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.

UserBenchmark of the month

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.
  • - Compare your components to the current market leaders.
  • - Explore your best upgrade options with a virtual PC build.
  • - Compare your in-game FPS to other users with your hardware.
  • - Share your opinion by voting.
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.
  • 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 i5-9400F $140Nvidia GTX 1660 $220Samsung 850 Evo 250GB $80
Intel Core i5-9600K $219Nvidia GTX 1660-Ti $278Samsung 850 Evo 500GB $105
AMD Ryzen 5 3600 $195Nvidia RTX 2060S (Super) $429Samsung 850 Pro 256GB $215
Seagate Barracuda 1TB (2016) $42Corsair Vengeance LPX DDR4 3000 C15 2x8GB $70SanDisk Extreme 64GB $88
WD Blue 1TB (2012) $34G.SKILL Trident Z DDR4 3200 C14 4x16GB $636SanDisk Extreme 32GB $48
Seagate Barracuda 3TB (2016) $64Corsair Vengeance LPX DDR4 3200 C16 2x8GB $73SanDisk Extreme 16GB $24
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