TEST
YOUR USB

HitachiG (ExtHD)

ST 256GB

▲ 5013 ▼

Release date ≈ Q1 2017.

Average Bench: 117% (3rd of 639)

Based on 18 user benchmarks.  Device: VID 4971 PID 1014 Model: HitachiG ST
Poor: 36%Average: 117% Great: 179%

Outstanding average bench

The HitachiG ST 256GB averaged 17.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the HitachiG ST 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 38.4MB/s
Avg. 4K Random Write Speed 24.1MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the HitachiG ST 256GB is 143%. This is a particularly wide range which indicates that the HitachiG ST 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 111MB/s
Avg. 4K Random Read Speed 9.42MB/s
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Average Bench

(Based on 18 samples)
Rank 3117%
Min Avg Max
31.6 Read 111 213
24.5 Write 114 239
20.3 Mixed 85.2 239
38.7 SusWrite 100 220
139% 103 MB/s
Min Avg Max
5.71 4K Read 9.42 15.9
6.53 4K Write 24.1 38.3
3.68 4K Mixed 8.84 20.6
1,156% 14.1 MB/s
Min Avg Max
8.83 DQ Read 11.2 17.6
18.3 DQ Write 38.4 52.6
6.7 DQ Mixed 10.1 25.7
1,691% 19.9 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
216GB free, PID 1014
Operating at USB 3.0 Speed
159% Outstanding
Read 213
Write 226
Mixed 239
296% 226 MB/s
4K Read 14.1
4K Write 24.5
4K Mixed 10.4
1,240% 16.3 MB/s
DQ Read 17.6
DQ Write 33.4
DQ Mixed 12.5
1,628% 21.2 MB/s
104GB free, PID 1014
Operating at USB 3.0 Speed
SusWrite @10s intervals: 216 229 236 238 237 165 MB/s
145% Outstanding
Read 122
Write 239
Mixed 234
SusWrite 220
299% 204 MB/s
4K Read 15.9
4K Write 24.7
4K Mixed 20.6
1,600% 20.4 MB/s
DQ Read 9.8
DQ Write 37.8
DQ Mixed 25.7
2,196% 24.4 MB/s
172GB free, PID 1014
Operating at USB 2.1 Speed
73.9% Very good
Read 41.8
Write 42.8
Mixed 41.7
54% 42.1 MB/s
4K Read 12.4
4K Write 18.1
4K Mixed 10.4
1,014% 13.6 MB/s
DQ Read 14.1
DQ Write 23.6
DQ Mixed 9.69
1,184% 15.8 MB/s
116GB free, PID 1014
Operating at USB 2.1 Speed
SusWrite @10s intervals: 40 41 39 37 37 37 MB/s
73% Very good
Read 35.2
Write 32.7
Mixed 33.5
SusWrite 38.7
48% 35 MB/s
4K Read 12.2
4K Write 18.4
4K Mixed 15.5
1,198% 15.4 MB/s
DQ Read 13.8
DQ Write 18.3
DQ Mixed 16
1,218% 16 MB/s
238GB free, PID 1014
Operating at USB 2.1 Speed
70.9% Very good
Read 37.4
Write 38
Mixed 37.2
49% 37.5 MB/s
4K Read 8.14
4K Write 18
4K Mixed 10
982% 12 MB/s
DQ Read 8.83
DQ Write 21
DQ Mixed 10.3
1,096% 13.4 MB/s
238GB free, PID 1014
Operating at USB 2.1 Speed
70.8% Very good
Read 34.6
Write 32.9
Mixed 33.6
43% 33.7 MB/s
4K Read 12.1
4K Write 18.2
4K Mixed 9.14
973% 13.1 MB/s
DQ Read 12.7
DQ Write 21.5
DQ Mixed 9.27
1,094% 14.5 MB/s
116GB free, PID 1014
Operating at USB 2.1 Speed
SusWrite @10s intervals: 42 42 41 41 41 41 MB/s
52.8% Above average
Read 40.8
Write 39.6
Mixed 20.3
SusWrite 41.3
48% 35.5 MB/s
4K Read 12
4K Write 11.4
4K Mixed 15.1
946% 12.8 MB/s
DQ Read 14.8
DQ Write 18.5
DQ Mixed 8.1
960% 13.8 MB/s
215GB free, PID 1014
Operating at USB 2.1 Speed
35.7% Below average
Read 32.9
Write 26.2
Mixed 29.1
37% 29.4 MB/s
4K Read 5.71
4K Write 7.79
4K Mixed 3.68
411% 5.73 MB/s
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