TEST
YOUR USB

JMicron (ExtHD)

H/W RAID1 2TB

▲ 500 ▼

Release date ≈ Q1 2016.

Average Bench: 57.7% (18th of 639)

Based on 7 user benchmarks.  Device: VID 152d PID 0539 Model: JMicron H/W RAID1
Poor: 38%Average: 57.7% Great: 66%

Average average bench

The JMicron H/W RAID1 2TB averaged 42.3% 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. Sustained Write Speed 163MB/s
Avg. Sequential Write Speed 138MB/s

Good consistency

The range of scores (95th - 5th percentile) for the JMicron H/W RAID1 2TB is 27.6%. This is a relatively narrow range which indicates that the JMicron H/W RAID1 2TB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.81MB/s
Avg. 4K Random Mixed IO Speed 0.39MB/s
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Average Bench

(Based on 7 samples)
Rank 1857.7%
Min Avg Max
111 Read 145 163
76.4 Write 138 178
29.5 Mixed 86.5 131
156 SusWrite 163 169
180% 133 MB/s
Min Avg Max
0.43 4K Read 0.81 1.05
0.93 4K Write 1.44 1.71
0.17 4K Mixed 0.39 0.9
65.3% 0.88 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
65.8% Good
Read 157
Write 178
Mixed 131
200% 155 MB/s
4K Read 0.91
4K Write 1.27
4K Mixed 0.22
54% 0.8 MB/s
1.5TB free, PID 0539
Operating at USB 3.0 Speed
65.4% Good
Read 158
Write 175
Mixed 128
197% 154 MB/s
4K Read 1
4K Write 1.33
4K Mixed 0.2
56% 0.84 MB/s
1TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 170 165 169 168 171 169 MB/s
65.2% Good
Read 158
Write 128
Mixed 62
SusWrite 169
170% 129 MB/s
4K Read 0.8
4K Write 1.7
4K Mixed 0.8
88% 1.1 MB/s
975GB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 159 167 157 155 153 147 MB/s
63.1% Good
Read 163
Write 133
Mixed 67.5
SusWrite 156
170% 130 MB/s
4K Read 0.7
4K Write 1.7
4K Mixed 0.9
91% 1.1 MB/s
961GB free, PID 0539
Operating at USB 3.0 Speed
43.8% Average
Read 111
Write 102
Mixed 96.4
131% 103 MB/s
4K Read 0.81
4K Write 1.71
4K Mixed 0.26
70% 0.93 MB/s
705GB free, PID 0539
Operating at USB 3.0 Speed
38.2% Below average
Read 118
Write 76.4
Mixed 29.5
83% 74.5 MB/s
4K Read 0.43
4K Write 1.41
4K Mixed 0.17
56% 0.67 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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