Average Bench: 44% (32nd of 639)

Based on 6,598 user benchmarks.  Device: VID 1058 PID 25a1 Model: WD Elements 25A1
Poor: 19%Average: 44% Great: 62%

Below average average bench

The WD Elements 25A1 4TB averaged 56.0% 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.

Strengths

Avg. 4K-64Thread Write Speed 9.79MB/s
Avg. 4K Random Write Speed 4.77MB/s

Average consistency

The range of scores (95th - 5th percentile) for the WD Elements 25A1 4TB is 43.2%. This is a relatively wide range which indicates that the WD Elements 25A1 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Read Speed 0.38MB/s
Avg. 4K Random Read Speed 1.01MB/s
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Average Bench

(Based on 6,598 samples)
Min Avg Max
29.4 Read 82.4 123
28.7 Write 78.3 107
23.3 Mixed 58.1 77.9
24.9 SusWrite 78.5 110
100% 74.3 MB/s
Min Avg Max
0.6 4K Read 1.01 1.5
0.9 4K Write 4.77 7.8
0.2 4K Mixed 0.69 0.9
190% 2.16 MB/s
Min Avg Max
0.3 DQ Read 0.38 0.49
7.4 DQ Write 9.79 11.7
0.31 DQ Mixed 0.56 0.7
354% 3.58 MB/s
User Benchmarks Bench Sequential Random 4k Deep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3.5TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 107 107 108 106 107 107 MB/s
Read 130
Write 113
Mixed 79
SusWrite 107
142% 107 MB/s
4K Read 1.5
4K Write 5.2
4K Mixed 0.7
206% 2.47 MB/s
2TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 70 64 65 65 65 65 MB/s
Read 97
Write 97.6
Mixed 72.1
SusWrite 65.9
111% 83.2 MB/s
4K Read 1
4K Write 6
4K Mixed 0.6
228% 2.53 MB/s
976GB free, PID 25a1
Operating at USB 3.0 Speed
SusWrite @10s intervals: 81 84 83 83 84 84 MB/s
Read 86.2
Write 82.3
Mixed 65.8
SusWrite 83.2
107% 79.4 MB/s
4K Read 1.3
4K Write 4.4
4K Mixed 0.7
178% 2.13 MB/s
2TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 91 93 96 96 89 97 MB/s
Read 77.8
Write 108
Mixed 68
SusWrite 93.5
121% 86.8 MB/s
4K Read 0.9
4K Write 3.9
4K Mixed 0.5
153% 1.77 MB/s
1.5TB free, PID 25a1
Operating at USB 3.0 Speed
SusWrite @10s intervals: 84 84 84 84 84 84 MB/s
Read 85.9
Write 75.5
Mixed 52
SusWrite 83.9
99% 74.3 MB/s
4K Read 0.9
4K Write 0.9
4K Mixed 0.2
41% 0.67 MB/s
3TB free, PID 25a1
Operating at USB 2.1 Speed
SusWrite @10s intervals: 35 39 39 39 38 38 MB/s
Read 37.7
Write 37.5
Mixed 30.3
SusWrite 37.9
49% 35.8 MB/s
4K Read 1.4
4K Write 5.4
4K Mixed 0.9
220% 2.57 MB/s
476GB free, PID 25a1
Operating at USB 2.1 Speed
SusWrite @10s intervals: 38 38 38 39 38 38 MB/s
Read 36.2
Write 37
Mixed 31
SusWrite 38.3
49% 35.6 MB/s
4K Read 1.2
4K Write 5.2
4K Mixed 0.9
212% 2.43 MB/s
15GB free, PID 25a1
Operating at USB 2.1 Speed
SusWrite @10s intervals: 34 33 37 37 37 37 MB/s
Read 36.9
Write 36.9
Mixed 28.2
SusWrite 35.8
47% 34.5 MB/s
4K Read 0.3
4K Write 3.8
4K Mixed 0.5
147% 1.53 MB/s
6,598 MORE »
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USB Flash Drive Rankings (Price vs Performance) September 2021 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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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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Seagate Barracuda 2TB (2016) $80G.SKILL Trident Z DDR4 3200 C14 4x16GB $649SanDisk Ultra Fit 32GB $16
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