TEST
YOUR USB

JMicron (ExtHD)

H/W RAID5 6TB

▲ 500 ▼

Release date ≈ Q3 2018.

Average Bench: 51.4% (21st of 639)

Based on 6 user benchmarks.  Device: VID 152d PID 0539 Model: JMicron H/W RAID5
Poor: 14%Average: 51.4% Great: 81%

Average average bench

The JMicron H/W RAID5 6TB averaged 48.5% 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 133MB/s
Avg. Sequential Write Speed 129MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the JMicron H/W RAID5 6TB is 66.8%. This is a particularly wide range which indicates that the JMicron H/W RAID5 6TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 1.57MB/s
Avg. 4K Random Write Speed 0.27MB/s
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Average Bench

(Based on 6 samples)
Rank 2151.4%
Min Avg Max
34.1 Read 147 224
38 Write 129 215
6.7 Mixed 85.9 153
31.1 SusWrite 133 221
164% 124 MB/s
Min Avg Max
0.1 4K Read 1.57 3.2
0.2 4K Write 0.27 0.4
0.2 4K Mixed 0.3 0.4
25.1% 0.71 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 221 210 220 225 227 226 MB/s
80.9% Excellent
Read 217
Write 215
Mixed 118
SusWrite 221
259% 193 MB/s
4K Read 1.4
4K Write 0.3
4K Mixed 0.4
29% 0.7 MB/s
3TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 201 207 204 214 214 215 MB/s
79.3% Very good
Read 224
Write 214
Mixed 153
SusWrite 209
269% 200 MB/s
4K Read 1.2
4K Write 0.3
4K Mixed 0.4
28% 0.63 MB/s
3TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 158 180 214 218 225 225 MB/s
76% Very good
Read 208
Write 201
Mixed 152
SusWrite 203
258% 191 MB/s
4K Read 1.1
4K Write 0.4
4K Mixed 0.4
31% 0.63 MB/s
3TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 57 79 81 126 110 98 MB/s
37.1% Below average
Read 108
Write 60.5
Mixed 44.5
SusWrite 91.9
97% 76.3 MB/s
4K Read 3.2
4K Write 0.2
4K Mixed 0.2
26% 1.2 MB/s
1.5TB free, PID 0539
Operating at USB 3.0 Speed
SusWrite @10s intervals: 30 27 26 32 36 35 MB/s
21.2% Poor
Read 91.5
Write 45.1
Mixed 41.5
SusWrite 31.1
62% 52.3 MB/s
4K Read 2.4
4K Write 0.2
4K Mixed 0.2
22% 0.93 MB/s
4TB free, PID 0539
Operating at USB 2.1 Speed
SusWrite @10s intervals: 38 36 41 40 40 39 MB/s
14.1% Very poor
Read 34.1
Write 38
Mixed 6.7
SusWrite 39.1
39% 29.5 MB/s
4K Read 0.1
4K Write 0.2
4K Mixed 0.2
14% 0.17 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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