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WD (ExtHD)

Elements 25A1 4TB

▲ 500 ▼

Release date ≈ Q3 2017.

Average Bench: 43.5% (33rd of 639)

Based on 8,402 user benchmarks.  Device: VID 1058 PID 25a1 Model: WD Elements 25A1
Poor: 20%Average: 43.5% Great: 61%

Below average average bench

The WD Elements 25A1 4TB averaged 56.5% 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.

Strengths

Avg. 4K-64Thread Write Speed 9.8MB/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 41.6%. 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 1.02MB/s

Average Bench

(Based on 8,402 samples)
Rank 3343.5%
Min Avg Max
29 Read 82.4 123
25.7 Write 77 107
24.1 Mixed 57.7 78
24.5 SusWrite 76.2 109
98.5% 73.3 MB/s
Min Avg Max
0.5 4K Read 1.02 1.6
0.8 4K Write 4.77 7.9
0.2 4K Mixed 0.7 0.9
190% 2.16 MB/s
Min Avg Max
0.22 DQ Read 0.38 0.4
7.68 DQ Write 9.8 11.6
0.4 DQ Mixed 0.56 0.7
354% 3.58 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
2TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 94 96 95 97 96 97 MB/s
53.5% Above average
Read 98.9
Write 65.5
Mixed 53.5
SusWrite 95.8
103% 78.4 MB/s
4K Read 0.7
4K Write 5.9
4K Mixed 0.6
224% 2.4 MB/s
2.5TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 115 114 114 115 114 114 MB/s
48.5% Average
Read 78.9
Write 91.8
Mixed 66.9
SusWrite 114
123% 87.9 MB/s
4K Read 1
4K Write 3.9
4K Mixed 0.8
164% 1.9 MB/s
1.5TB free, PID 25a1
Operating at USB 3.1 Speed
SusWrite @10s intervals: 73 72 71 72 71 72 MB/s
45.3% Average
Read 77.6
Write 66.3
Mixed 55.6
SusWrite 71.8
91% 67.8 MB/s
4K Read 1.1
4K Write 5.9
4K Mixed 0.6
225% 2.53 MB/s
1.5TB free, PID 25a1
Operating at USB 3.0 Speed
SusWrite @10s intervals: 81 83 83 82 83 82 MB/s
33.1% Below average
Read 88
Write 78.7
Mixed 58.2
SusWrite 82.3
103% 76.8 MB/s
4K Read 0.9
4K Write 0.7
4K Mixed 0.2
34% 0.6 MB/s
3TB free, PID 25a1
Operating at USB 2.1 Speed
SusWrite @10s intervals: 36 36 36 31 33 35 MB/s
19.6% Very poor
Read 54.2
Write 33.9
Mixed 27.7
SusWrite 34.5
48% 37.6 MB/s
4K Read 2.3
4K Write 1.2
4K Mixed 0.8
76% 1.43 MB/s
8,402 MORE »
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