TEST
YOUR USB

HitachiG (ExtHD)

ST 40GB

▲ 5022 ▼

Release date ≈ Q1 2018.

Average Bench: 59.5% (14th of 639)

Based on 17 user benchmarks.  Device: VID 4971 PID 1014 Model: HitachiG ST
Poor: 22%Average: 59.5% Great: 106%

Average average bench

The HitachiG ST 40GB averaged 40.4% 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 25.8MB/s
Avg. 4K Random Write Speed 12.8MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the HitachiG ST 40GB is 84.2%. This is a particularly wide range which indicates that the HitachiG ST 40GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 73.9MB/s
Avg. Sequential Write Speed 34.1MB/s
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Average Bench

(Based on 17 samples)
Rank 1459.5%
Min Avg Max
25.9 Read 73.9 179
23.4 Write 34.1 48
22.5 Mixed 40.8 72.4
47 SusWrite 47.4 47.8
61.4% 49.1 MB/s
Min Avg Max
3.12 4K Read 8.57 14.9
3.62 4K Write 12.8 23.3
2.29 4K Mixed 6.77 14.5
696% 9.37 MB/s
Min Avg Max
10.9 DQ Read 14 16.3
19.4 DQ Write 25.8 32.5
7.82 DQ Mixed 11.3 15.3
1,314% 17 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
37GB free, PID 1014
Operating at USB 3.0 Speed
SusWrite @10s intervals: 48 48 48 48 48 47 MB/s
110% Outstanding
Read 167
Write 38.8
Mixed 72.1
SusWrite 47.6
91% 81.3 MB/s
4K Read 14.9
4K Write 23.3
4K Mixed 14.5
1,341% 17.6 MB/s
DQ Read 16
DQ Write 32.5
DQ Mixed 15.3
1,685% 21.3 MB/s
36GB free, PID 1014
Operating at USB 3.0 Speed
SusWrite @10s intervals: 47 47 47 48 48 48 MB/s
106% Outstanding
Read 168
Write 47.5
Mixed 69.7
SusWrite 47.3
94% 83 MB/s
4K Read 14.4
4K Write 22.1
4K Mixed 12.5
1,230% 16.3 MB/s
DQ Read 16.3
DQ Write 31.8
DQ Mixed 15.3
1,662% 21.1 MB/s
36GB free, PID 1014
Operating at USB 3.0 Speed
SusWrite @10s intervals: 45 47 47 48 48 48 MB/s
106% Outstanding
Read 173
Write 47.9
Mixed 70.2
SusWrite 47
95% 84.6 MB/s
4K Read 13.7
4K Write 21.8
4K Mixed 13.7
1,258% 16.4 MB/s
DQ Read 15.4
DQ Write 26.1
DQ Mixed 15.2
1,462% 18.9 MB/s
36GB free, PID 1014
Operating at USB 3.0 Speed
103% Outstanding
Read 179
Write 47.1
Mixed 69.7
102% 98.8 MB/s
4K Read 12.4
4K Write 20.8
4K Mixed 8.53
1,043% 13.9 MB/s
DQ Read 15.6
DQ Write 28.2
DQ Mixed 9.04
1,326% 17.6 MB/s
36GB free, PID 1014
Operating at USB 3.0 Speed
103% Outstanding
Read 177
Write 47.2
Mixed 72.4
103% 98.8 MB/s
4K Read 12.5
4K Write 20.7
4K Mixed 8.39
1,038% 13.9 MB/s
DQ Read 15.6
DQ Write 28.9
DQ Mixed 9.06
1,349% 17.9 MB/s
36GB free, PID 1014
Operating at USB 3.0 Speed
SusWrite @10s intervals: 48 48 48 48 48 48 MB/s
83.3% Excellent
Read 72
Write 48
Mixed 39
SusWrite 47.8
66% 51.7 MB/s
4K Read 10.7
4K Write 19.5
4K Mixed 12.1
1,114% 14.1 MB/s
DQ Read 12.9
DQ Write 24.2
DQ Mixed 14
1,347% 17 MB/s
36GB free, PID 1014
Operating at USB 2.1 Speed
66.6% Good
Read 40.8
Write 42.1
Mixed 32.2
49% 38.3 MB/s
4K Read 9.15
4K Write 16.1
4K Mixed 7.81
846% 11 MB/s
DQ Read 12
DQ Write 21.5
DQ Mixed 8.12
1,050% 13.9 MB/s
36GB free, PID 1014
Operating at USB 2.1 Speed
34.3% Below average
Read 26.1
Write 23.4
Mixed 24.7
32% 24.8 MB/s
4K Read 7.39
4K Write 7.69
4K Mixed 4.39
438% 6.49 MB/s
36GB free, PID 1014
Operating at USB 2.1 Speed
32.9% Below average
Read 26.1
Write 23.5
Mixed 22.5
30% 24 MB/s
4K Read 6.85
4K Write 7.29
4K Mixed 4.39
423% 6.18 MB/s
17 MORE »
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