TEST
YOUR USB

WD (ExtHD)

Elements 25A3 16TB

▲ 500 ▼

Release date ≈ Q1 2021.

Average Bench: 87.9% (5th of 639)

Based on 461 user benchmarks.  Device: VID 1058 PID 25a3 Model: WD Elements 25A3
Poor: 37%Average: 87.9% Great: 109%

Very good average bench

The WD Elements 25A3 16TB averaged just 12.1% lower than the peak scores attained by the group leaders. This is an excellent result which ranks the WD Elements 25A3 16TB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 9.44MB/s
Avg. 4K Random Write Speed 8.61MB/s

Very poor consistency

The range of scores (95th - 5th percentile) for the WD Elements 25A3 16TB is 72.7%. This is a particularly wide range which indicates that the WD Elements 25A3 16TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K-64Thread Read Speed 2.71MB/s
Avg. 4K Random Read Speed 5.45MB/s
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Average Bench

(Based on 461 samples)
Rank 587.9%
Min Avg Max
39.7 Read 170 222
37.8 Write 168 221
31.6 Mixed 132 165
37 SusWrite 163 218
214% 158 MB/s
Min Avg Max
1.7 4K Read 5.45 8.08
5.75 4K Write 8.61 10.1
1.6 4K Mixed 2.3 2.7
391% 5.45 MB/s
Min Avg Max
2 DQ Read 2.71 3.5
8.9 DQ Write 9.44 10
1.8 DQ Mixed 2.15 2.5
404% 4.77 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
10.5TB free, PID 25a3
Operating at USB 3.1 Speed
SusWrite @10s intervals: 249 256 249 253 256 249 MB/s
117% Outstanding
Read 261
Write 260
Mixed 166
SusWrite 252
316% 234 MB/s
4K Read 7.1
4K Write 7.4
4K Mixed 2.4
360% 5.63 MB/s
13TB free, PID 25a3
Operating at USB 3.1 Speed
SusWrite @10s intervals: 212 212 207 208 210 210 MB/s
106% Outstanding
Read 207
Write 209
Mixed 160
SusWrite 210
267% 196 MB/s
4K Read 6.5
4K Write 9.4
4K Mixed 2.5
429% 6.13 MB/s
DQ Read 3.2
DQ Write 9.5
DQ Mixed 2.2
410% 4.97 MB/s
14.5TB free, PID 25a3
Operating at USB 3.1 Speed
SusWrite @10s intervals: 124 222 209 213 218 223 MB/s
104% Outstanding
Read 199
Write 198
Mixed 147
SusWrite 201
253% 187 MB/s
4K Read 5.3
4K Write 9.6
4K Mixed 2.8
441% 5.9 MB/s
DQ Read 3.1
DQ Write 9.4
DQ Mixed 2.3
410% 4.93 MB/s
13.5TB free, PID 25a3
Operating at USB 3.1 Speed
SusWrite @10s intervals: 204 199 203 199 202 200 MB/s
102% Outstanding
Read 204
Write 204
Mixed 157
SusWrite 201
260% 192 MB/s
4K Read 5.6
4K Write 8.8
4K Mixed 2.2
395% 5.53 MB/s
DQ Read 2.7
DQ Write 9.4
DQ Mixed 2.2
405% 4.77 MB/s
3TB free, PID 25a3
Operating at USB 2.1 Speed
SusWrite @10s intervals: 133 136 133 135 142 130 MB/s
81.2% Excellent
Read 141
Write 140
Mixed 131
SusWrite 135
186% 137 MB/s
4K Read 4.1
4K Write 9.9
4K Mixed 2.2
427% 5.4 MB/s
DQ Read 2.2
DQ Write 9.7
DQ Mixed 1.9
403% 4.6 MB/s
3TB free, PID 25a3
Operating at USB 2.1 Speed
SusWrite @10s intervals: 138 138 138 133 131 136 MB/s
78.6% Very good
Read 132
Write 129
Mixed 129
SusWrite 136
180% 131 MB/s
4K Read 3.2
4K Write 9.5
4K Mixed 2.3
413% 5 MB/s
DQ Read 2.8
DQ Write 9.3
DQ Mixed 2.1
398% 4.73 MB/s
46GB free, PID 25a3
Operating at USB 3.1 Speed
SusWrite @10s intervals: 132 133 134 138 144 137 MB/s
63.9% Good
Read 160
Write 158
Mixed 114
SusWrite 136
191% 142 MB/s
4K Read 2.1
4K Write 3.4
4K Mixed 2.2
198% 2.57 MB/s
461 MORE »
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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