TEST
YOUR USB

JMicron (ExtHD)

Generic 128GB

▲ 500 ▼

Release date ≈ Q1 2019.

Average Bench: 136% (3rd of 639)

Based on 10 user benchmarks.  Device: VID 152d PID 0576 Model: JMicron Generic
Poor: 21%Average: 136% Great: 164%

Outstanding average bench

The JMicron Generic 128GB averaged 36.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the JMicron Generic 128GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 35MB/s
Avg. 4K Random Write Speed 26.1MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the JMicron Generic 128GB is 142%. This is a particularly wide range which indicates that the JMicron Generic 128GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 188MB/s
Avg. 4K Random Read Speed 16.5MB/s
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Average Bench

(Based on 10 samples)
Rank 3136%
Min Avg Max
25 Read 188 320
22.9 Write 151 255
22 Mixed 130 278
23 SusWrite 115 235
191% 146 MB/s
Min Avg Max
4.2 4K Read 16.5 33.2
3.8 4K Write 26.1 80
2.7 4K Mixed 14.8 41.7
1,452% 19.1 MB/s
Min Avg Max
12.8 DQ Read 20.5 36.8
17.2 DQ Write 35 92.3
7.4 DQ Mixed 18.7 45.7
1,903% 24.7 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
77GB free (System drive), PID 0576
Operating at USB 3.1 Speed
SusWrite @10s intervals: 229 199 230 250 235 270 MB/s
158% Outstanding
Read 258
Write 242
Mixed 146
SusWrite 235
294% 220 MB/s
4K Read 15.8
4K Write 21.4
4K Mixed 15.9
1,327% 17.7 MB/s
DQ Read 19.6
DQ Write 28.6
DQ Mixed 20
1,726% 22.7 MB/s
35GB free, PID 0576
Operating at USB 3.1 Speed
SusWrite @10s intervals: 65 85 85 56 44 44 MB/s
127% Outstanding
Read 227
Write 231
Mixed 212
SusWrite 63.2
241% 183 MB/s
4K Read 19.2
4K Write 24.8
4K Mixed 18.4
1,541% 20.8 MB/s
DQ Read 22.2
DQ Write 27
DQ Mixed 20.4
1,694% 23.2 MB/s
115GB free, PID 0576
Operating at USB 3.1 Speed
SusWrite @10s intervals: 139 139 139 141 137 137 MB/s
127% Outstanding
Read 177
Write 128
Mixed 110
SusWrite 139
181% 138 MB/s
4K Read 13.8
4K Write 22
4K Mixed 6.1
1,007% 14 MB/s
DQ Read 19.3
DQ Write 30.3
DQ Mixed 7.2
1,347% 18.9 MB/s
26GB free, PID 0576
Operating at USB 2.1 Speed
SusWrite @10s intervals: 46 46 46 46 46 46 MB/s
83.3% Excellent
Read 45.2
Write 45.7
Mixed 40.1
SusWrite 45.8
60% 44.2 MB/s
4K Read 13.3
4K Write 20.7
4K Mixed 13.9
1,226% 16 MB/s
DQ Read 12.8
DQ Write 19.9
DQ Mixed 17.4
1,316% 16.7 MB/s
119GB free, PID 0576
Operating at USB 2.1 Speed
SusWrite @10s intervals: 22 23 23 21 24 25 MB/s
21.3% Poor
Read 25
Write 22.9
Mixed 22
SusWrite 23
31% 23.2 MB/s
4K Read 4.2
4K Write 3.8
4K Mixed 2.7
237% 3.57 MB/s
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Group Test Results

  • 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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