Average Bench: 20.3% (206th of 639)

Based on 453 user benchmarks.  Device: VID 125f PID db8a Model: ADATA USB Flash Drive
Poor: 9%Average: 20.3% Great: 39%

Very poor average bench

The Adata DashDrive UV128 USB 3.0 64GB averaged 79.7% 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 Random Mixed IO Speed 0.85MB/s
Avg. 4K Random Write Speed 0.69MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Adata DashDrive UV128 USB 3.0 64GB is 30%. 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 23.4MB/s
Avg. Sequential Write Speed 28.2MB/s

Average Bench

(Based on 453 samples)
Min Avg Max
26.8 Read 74.9 143
2.64 Write 28.2 76.9
5.2 Mixed 33.4 84.4
7.99 SusWrite 23.4 61.5
46.5% 39.9 MB/s
Min Avg Max
1.99 4K Read 4.4 7.21
0 4K Write 0.69 1.4
0 4K Mixed 0.85 2.2
68.9% 1.98 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
28GB free, PID db8a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 23 32 31 31 31 31 MB/s
Read 103
Write 34.8
Mixed 10
SusWrite 29.9
47% 44.3 MB/s
4K Read 4.6
4K Write 0.7
4K Mixed 1.2
82% 2.17 MB/s
58GB free, PID db8a
Operating at USB 3.2 Speed
SusWrite @10s intervals: 1.8 8.1 6 16 11 13 MB/s
Read 98.7
Write 43.3
Mixed 27.5
SusWrite 9.3
48% 44.7 MB/s
4K Read 7.6
4K Write 1.4
4K Mixed 2.3
154% 3.77 MB/s
6GB free, PID db8a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 26 22 23 24 23 22 MB/s
Read 41.2
Write 41.7
Mixed 40.3
SusWrite 23.3
49% 36.6 MB/s
4K Read 6.5
4K Write 0.4
4K Mixed 0
38% 2.3 MB/s
453 MORE »


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USB Flash Drive Rankings (Price vs Performance) October 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]


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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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