TEST
YOUR USB

JMicron (ExtHD)

H/W RAID1 3TB

▲ 500 ▼

Release date ≈ Q2 2018.

Average Bench: 39.6% (42nd of 639)

Based on 6 user benchmarks.  Device: VID 152d PID 0539 Model: JMicron H/W RAID1
Poor: 19%Average: 39.6% Great: 55%

Poor average bench

The JMicron H/W RAID1 3TB averaged 60.3% 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 1.71MB/s
Avg. Sustained Write Speed 92.4MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the JMicron H/W RAID1 3TB is 35.7%. This is a relatively wide range which indicates that the JMicron H/W RAID1 3TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.78MB/s
Avg. Sequential Read Speed 111MB/s
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Average Bench

(Based on 6 samples)
Rank 4239.6%
Min Avg Max
38.2 Read 111 198
37 Write 78 113
29.8 Mixed 51.4 62.5
41.2 SusWrite 92.4 128
108% 83.2 MB/s
Min Avg Max
0.7 4K Read 0.78 0.9
1.65 4K Write 1.71 1.8
0.29 4K Mixed 0.8 1
88.2% 1.1 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
1.5TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 127 127 128 128 128 127 MB/s
54.6% Above average
Read 147
Write 113
Mixed 62
SusWrite 128
146% 112 MB/s
4K Read 0.8
4K Write 1.7
4K Mixed 0.9
91% 1.13 MB/s
1.5TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 125 125 126 126 127 125 MB/s
50.7% Above average
Read 124
Write 79.8
Mixed 58.8
SusWrite 126
127% 97 MB/s
4K Read 0.7
4K Write 1.7
4K Mixed 1
94% 1.13 MB/s
1.5TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 124 126 126 126 127 124 MB/s
50% Above average
Read 119
Write 91.3
Mixed 57.7
SusWrite 126
130% 98.4 MB/s
4K Read 0.7
4K Write 1.7
4K Mixed 0.9
91% 1.1 MB/s
2.5TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 42 55 58 37 29 31 MB/s
43.5% Average
Read 198
Write 108
Mixed 62.5
SusWrite 42
118% 103 MB/s
4K Read 0.8
4K Write 1.8
4K Mixed 0.8
91% 1.13 MB/s
2.5TB free, PID 0539
Operating at USB 2.1 Speed
SusWrite @10s intervals: 38 40 42 42 42 42 MB/s
20.1% Poor
Read 39.2
Write 39.2
Mixed 29.8
SusWrite 41.2
51% 37.3 MB/s
4K Read 0.9
4K Write 1.7
4K Mixed 0.9
92% 1.17 MB/s
478GB free, PID 0539
Operating at USB 2.1 Speed
18.9% Very poor
Read 38.2
Write 37
Mixed 37.3
48% 37.5 MB/s
4K Read 0.79
4K Write 1.65
4K Mixed 0.29
69% 0.91 MB/s
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  • Best user rated - User sentiment trumps benchmarks for this comparison.
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  • Fastest real world speed - Real World Speed measures performance for typical consumers.

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