TEST
YOUR USB

DH (ExtHD)

Ext. HDD 320GB

▲ 500 ▼

Release date ≈ Q2 2017.

Average Bench: 22.2% (193rd of 639)

Based on 17 user benchmarks.  Device: VID 1f75 PID 0621 Model: DH Ext. HDD
Poor: 3%Average: 22.2% Great: 38%

Very poor average bench

The DH Ext. HDD 320GB averaged 77.7% 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 1.1MB/s
Avg. Sequential Write Speed 50.8MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the DH Ext. HDD 320GB is 34.6%. This is a relatively narrow range which indicates that the DH Ext. HDD 320GB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.4MB/s
Avg. Sequential Read Speed 52.1MB/s
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Average Bench

(Based on 17 samples)
Rank 19322.2%
Min Avg Max
4.7 Read 52.1 91.4
4.8 Write 50.8 96.5
4.3 Mixed 31.4 86.9
5.5 SusWrite 50.6 91.1
62% 46.2 MB/s
Min Avg Max
0 4K Read 0.4 0.64
0 4K Write 1.1 1.9
0 4K Mixed 0.46 0.8
54.7% 0.66 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
272GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 85 87 88 87 87 87 MB/s
35.5% Below average
Read 90.5
Write 87.7
Mixed 49.7
SusWrite 86.7
105% 78.6 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.6
60% 0.73 MB/s
107GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 72 70 72 71 71 70 MB/s
28.8% Poor
Read 61.4
Write 67.2
Mixed 36.9
SusWrite 71.1
81% 59.2 MB/s
4K Read 0.4
4K Write 1.4
4K Mixed 0.6
70% 0.8 MB/s
176GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 30 33 38 38 38 38 MB/s
16.3% Very poor
Read 36.7
Write 31
Mixed 24.5
SusWrite 35.8
43% 32 MB/s
4K Read 0.4
4K Write 1
4K Mixed 0.6
56% 0.67 MB/s
30GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 32 38 31 33 40 38 MB/s
15.9% Very poor
Read 36.2
Write 34.1
Mixed 21.8
SusWrite 35.7
43% 32 MB/s
4K Read 0.5
4K Write 0.9
4K Mixed 0.8
60% 0.73 MB/s
195GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 22 19 19 28 30 31 MB/s
14.4% Very poor
Read 27.1
Write 30.2
Mixed 21.9
SusWrite 24.9
35% 26 MB/s
4K Read 0.5
4K Write 1.6
4K Mixed 0.7
80% 0.93 MB/s
174GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 7.5 7.7 7.6 7.5 7.7 7.6 MB/s
3.26% Terrible
Read 4.7
Write 6.7
Mixed 6.2
SusWrite 7.6
9% 6.3 MB/s
4K Read 0
4K Write 0.3
4K Mixed 0.1
14% 0.13 MB/s
262GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 5.3 5.6 5.4 5.5 5.6 5.6 MB/s
1.92% Terrible
Read 5
Write 4.8
Mixed 5
SusWrite 5.5
7% 5.07 MB/s
4K Read 0
4K Write 0
4K Mixed 0
0% 0 MB/s
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