TEST
YOUR USB

DH (ExtHD)

Ext. HDD 250GB

▲ 500 ▼

Release date ≈ Q3 2017.

Average Bench: 48.4% (24th of 639)

Based on 27 user benchmarks.  Device: VID 1f75 PID 0621 Model: DH Ext. HDD
Poor: 12%Average: 48.4% Great: 153%

Below average average bench

The DH Ext. HDD 250GB averaged 51.5% 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 28MB/s
Avg. 4K-64Thread Mixed IO Speed 21MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the DH Ext. HDD 250GB is 141%. This is a particularly wide range which indicates that the DH Ext. HDD 250GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 73.7MB/s
Avg. 4K Random Read Speed 5.29MB/s
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Average Bench

(Based on 27 samples)
Rank 2448.4%
Min Avg Max
2 Read 73.7 226
1 Write 70.4 213
1.7 Mixed 62.4 214
1.6 SusWrite 66.6 204
92.4% 68.3 MB/s
Min Avg Max
0 4K Read 5.29 21.6
0 4K Write 7.23 25.7
0 4K Mixed 5.57 22.2
455% 6.03 MB/s
Min Avg Max
12.7 DQ Read 18 24.3
18.2 DQ Write 28 38.5
14.5 DQ Mixed 21 28
1,732% 22.3 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
44GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 212 185 157 130 173 161 MB/s
153% Outstanding
Read 222
Write 189
Mixed 172
SusWrite 170
250% 188 MB/s
4K Read 21.6
4K Write 25.7
4K Mixed 16.1
1,502% 21.1 MB/s
DQ Read 23.8
DQ Write 38.5
DQ Mixed 27.5
2,333% 29.9 MB/s
54GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 202 174 175 150 169 138 MB/s
152% Outstanding
Read 221
Write 210
Mixed 149
SusWrite 168
248% 187 MB/s
4K Read 21.5
4K Write 25.4
4K Mixed 22.2
1,699% 23 MB/s
DQ Read 24.3
DQ Write 38.2
DQ Mixed 27.3
2,318% 29.9 MB/s
233GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 107 107 107 108 108 107 MB/s
41.4% Average
Read 102
Write 108
Mixed 58.6
SusWrite 107
127% 93.9 MB/s
4K Read 0.6
4K Write 1
4K Mixed 0.8
63% 0.8 MB/s
178GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 62 74 74 74 71 74 MB/s
31.6% Below average
Read 69.3
Write 71.2
Mixed 48
SusWrite 71.5
88% 65 MB/s
4K Read 0.5
4K Write 1.9
4K Mixed 0.7
90% 1.03 MB/s
137GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 24 24 25 24 24 23 MB/s
27.4% Poor
Read 26.2
Write 23.5
Mixed 25
SusWrite 24
34% 24.7 MB/s
4K Read 6.1
4K Write 5.5
4K Mixed 6.8
441% 6.13 MB/s
173GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 71 78 78 76 80 80 MB/s
23.4% Poor
Read 22.1
Write 40
Mixed 37.1
SusWrite 77
66% 44 MB/s
4K Read 0.2
4K Write 1.1
4K Mixed 0.2
45% 0.5 MB/s
27 MORE »
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