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WD (ExtHD)

My Book 1235 4TB

▲ 500 ▼

Release date ≈ Q1 2016.

Average Bench: 40.4% (40th of 639)

Based on 2,399 user benchmarks.  Device: VID 1058 PID 1235 Model: WD My Book 1235
Poor: 15%Average: 40.4% Great: 59%

Below average average bench

The WD My Book 1235 4TB averaged 59.5% 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 Random Write Speed 1.88MB/s
Avg. Sequential Write Speed 93.4MB/s

Average consistency

The range of scores (95th - 5th percentile) for the WD My Book 1235 4TB is 44%. This is a relatively wide range which indicates that the WD My Book 1235 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.87MB/s
Avg. Sequential Read Speed 101MB/s

Average Bench

(Based on 2,399 samples)
Rank 4040.4%
Min Avg Max
30.3 Read 101 150
24.6 Write 93.4 145
24.2 Mixed 74.3 109
22.6 SusWrite 90.7 143
121% 89.9 MB/s
Min Avg Max
0.7 4K Read 0.87 1
1.2 4K Write 1.88 2.4
0.7 4K Mixed 0.87 1
96.7% 1.21 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3.5TB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 150 149 150 149 150 149 MB/s
61.8% Good
Read 147
Write 149
Mixed 112
SusWrite 149
190% 139 MB/s
4K Read 1
4K Write 2.5
4K Mixed 1
123% 1.5 MB/s
1.5TB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 149 150 148 149 148 152 MB/s
61.5% Good
Read 151
Write 143
Mixed 97.1
SusWrite 149
182% 135 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 0.9
109% 1.33 MB/s
2.5TB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 122 124 124 122 128 123 MB/s
54.1% Above average
Read 139
Write 130
Mixed 90.2
SusWrite 124
161% 121 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 0.9
109% 1.33 MB/s
936GB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 112 113 116 118 116 122 MB/s
48.7% Average
Read 131
Write 98.9
Mixed 96.3
SusWrite 116
147% 110 MB/s
4K Read 0.9
4K Write 1.4
4K Mixed 0.8
78% 1.03 MB/s
529GB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 104 106 104 106 106 102 MB/s
44.5% Average
Read 119
Write 109
Mixed 95.9
SusWrite 104
144% 107 MB/s
4K Read 1
4K Write 1.4
4K Mixed 0.8
78% 1.07 MB/s
3TB free, PID 1235
Operating at USB 3.0 Speed
SusWrite @10s intervals: 85 109 78 92 98 80 MB/s
42.5% Average
Read 122
Write 115
Mixed 87.5
SusWrite 90.4
138% 104 MB/s
4K Read 0.8
4K Write 1.6
4K Mixed 0.9
88% 1.1 MB/s
2.5TB free, PID 1235
Operating at USB 2.1 Speed
SusWrite @10s intervals: 29 29 28 29 29 29 MB/s
16.3% Very poor
Read 52.2
Write 26.1
Mixed 26.8
SusWrite 28.8
42% 33.5 MB/s
4K Read 2.7
4K Write 0.6
4K Mixed 0.9
61% 1.4 MB/s
2,399 MORE »
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