Average Bench: 20.4% (205th of 639)

Based on 490 user benchmarks.  Device: VID 125f PID db8a Model: ADATA USB Flash Drive
Poor: 9%Average: 20.4% Great: 39%

Very poor average bench

The Adata DashDrive UV128 USB 3.0 64GB averaged 79.6% 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 Mixed IO Speed 0.87MB/s
Avg. 4K Random Write Speed 0.69MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Adata DashDrive UV128 USB 3.0 64GB is 30.1%. This is a relatively narrow range which indicates that the Adata DashDrive UV128 USB 3.0 64GB performs reasonably consistently under varying real world conditions.


Avg. Sustained Write Speed 24.5MB/s
Avg. Sequential Write Speed 28.1MB/s

Average Bench

(Based on 490 samples)
Min Avg Max
27.1 Read 75.2 142
2.5 Write 28.1 75.4
5.2 Mixed 33.8 84.1
8 SusWrite 24.5 62.1
47.2% 40.4 MB/s
Min Avg Max
2.03 4K Read 4.43 7.2
0 4K Write 0.69 1.4
0 4K Mixed 0.87 2.2
69.7% 2 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
52GB free, PID db8a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 42 59 62 61 61 62 MB/s
Read 82.9
Write 13.5
Mixed 50
SusWrite 57.9
62% 51.1 MB/s
4K Read 5.4
4K Write 0.9
4K Mixed 1.5
102% 2.6 MB/s
4GB free, PID db8a
Operating at USB 3.2 Speed
SusWrite @10s intervals: 16 16 16 16 16 9.4 MB/s
Read 97
Write 16.2
Mixed 10.7
SusWrite 15.1
33% 34.8 MB/s
4K Read 4.6
4K Write 0.7
4K Mixed 0.8
68% 2.03 MB/s
27GB free, PID db8a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 24 24 24 24 24 25 MB/s
Read 29.3
Write 23.9
Mixed 25.8
SusWrite 24.1
34% 25.8 MB/s
4K Read 2.8
4K Write 0.6
4K Mixed 1
65% 1.47 MB/s
56GB free, PID db8a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 8.7 14 14 16 16 14 MB/s
Read 30
Write 15.5
Mixed 19.2
SusWrite 13.7
24% 19.6 MB/s
4K Read 2.8
4K Write 0.6
4K Mixed 1
65% 1.47 MB/s
490 MORE »


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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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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.

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