TEST
YOUR USB

WDC (ExtHD)

WD40 EZRX-00SPEB0 4TB

▲ 500 ▼

Release date ≈ Q2 2016.

Average Bench: 41.3% (37th of 639)

Based on 16 user benchmarks.  Device: VID 174c PID 5106 Model: WDC WD40 EZRX-00SPEB0
Poor: 17%Average: 41.3% Great: 60%

Below average average bench

The WDC WD40 EZRX-00SPEB0 4TB averaged 58.6% 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.

Strengths

Avg. 4K Random Write Speed 2.12MB/s
Avg. Sequential Write Speed 98.7MB/s

Average consistency

The range of scores (95th - 5th percentile) for the WDC WD40 EZRX-00SPEB0 4TB is 42.8%. This is a relatively wide range which indicates that the WDC WD40 EZRX-00SPEB0 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.9MB/s
Avg. Sequential Read Speed 98.6MB/s
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Average Bench

(Based on 16 samples)
Rank 3741.3%
Min Avg Max
32.3 Read 98.6 149
27.2 Write 98.7 147
26.2 Mixed 69 107
13.6 SusWrite 88.9 154
120% 88.8 MB/s
Min Avg Max
0.58 4K Read 0.9 1.8
1 4K Write 2.12 2.6
0.23 4K Mixed 0.87 1.1
105% 1.3 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3.5TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 155 155 154 154 154 154 MB/s
62.2% Good
Read 144
Write 147
Mixed 92.1
SusWrite 154
182% 135 MB/s
4K Read 0.9
4K Write 2.4
4K Mixed 1
119% 1.43 MB/s
3TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 144 143 144 143 143 144 MB/s
60% Above average
Read 141
Write 146
Mixed 107
SusWrite 144
183% 134 MB/s
4K Read 1
4K Write 2.6
4K Mixed 1
126% 1.53 MB/s
2.5TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 127 130 131 130 131 130 MB/s
56.9% Above average
Read 149
Write 143
Mixed 80
SusWrite 130
167% 126 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 1.1
116% 1.4 MB/s
2.5TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 133 131 132 130 131 131 MB/s
55.6% Above average
Read 130
Write 131
Mixed 98.2
SusWrite 131
166% 122 MB/s
4K Read 1
4K Write 2.6
4K Mixed 1
126% 1.53 MB/s
1.5TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 118 121 121 121 121 120 MB/s
51.8% Above average
Read 124
Write 124
Mixed 80.4
SusWrite 120
151% 112 MB/s
4K Read 0.9
4K Write 2.4
4K Mixed 1
119% 1.43 MB/s
2.5TB free, PID 5106
Operating at USB 3.0 Speed
SusWrite @10s intervals: 127 120 131 110 130 110 MB/s
50.5% Above average
Read 120
Write 125
Mixed 73.2
SusWrite 121
148% 110 MB/s
4K Read 0.9
4K Write 2.1
4K Mixed 1
109% 1.33 MB/s
38GB free, PID 5106
Operating at USB 2.1 Speed
SusWrite @10s intervals: 39 37 38 38 37 38 MB/s
19.4% Very poor
Read 52.7
Write 30.3
Mixed 29.5
SusWrite 37.8
48% 37.6 MB/s
4K Read 1.8
4K Write 1
4K Mixed 0.8
68% 1.2 MB/s
3.5TB free, PID 5106
Operating at USB 2.1 Speed
SusWrite @10s intervals: 21 21 21 21 21 22 MB/s
17.1% Very poor
Read 36.4
Write 36.9
Mixed 30.3
SusWrite 21.1
42% 31.2 MB/s
4K Read 0.8
4K Write 2.3
4K Mixed 1
115% 1.37 MB/s
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