TEST
YOUR USB

JMicron (ExtHD)

Generic 240GB

▲ 509 ▼

Release date ≈ Q1 2017.

Average Bench: 109% (5th of 639)

Based on 202 user benchmarks.  Device: VID 152d PID 0578 Model: JMicron Generic
Poor: 23%Average: 109% Great: 268%

Outstanding average bench

The JMicron Generic 240GB averaged 8.7% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the JMicron Generic 240GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 43.7MB/s
Avg. 4K Random Write Speed 20.9MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the JMicron Generic 240GB is 245%. This is a particularly wide range which indicates that the JMicron Generic 240GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 126MB/s
Avg. 4K Random Read Speed 13.3MB/s
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Average Bench

(Based on 202 samples)
Rank 5109%
Min Avg Max
23.4 Read 126 312
19.6 Write 117 285
20.2 Mixed 99.5 240
19.6 SusWrite 117 287
155% 115 MB/s
Min Avg Max
4.38 4K Read 13.3 24.9
4.09 4K Write 20.9 55.6
2.45 4K Mixed 9.47 23.6
1,081% 14.5 MB/s
Min Avg Max
11.2 DQ Read 22.8 29.3
15.2 DQ Write 43.7 79.8
9.91 DQ Mixed 16.3 31.8
2,128% 27.6 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
142GB free, PID 0578
Operating at USB 3.0 Speed
SusWrite @10s intervals: 269 233 248 246 244 249 MB/s
177% Outstanding
Read 321
Write 292
Mixed 218
SusWrite 248
358% 270 MB/s
4K Read 16.9
4K Write 23.5
4K Mixed 7.3
1,110% 15.9 MB/s
DQ Read 19.3
DQ Write 34.7
DQ Mixed 8.4
1,538% 20.8 MB/s
125GB free, PID 0578
Operating at USB 3.0 Speed
SusWrite @10s intervals: 226 216 216 215 191 83 MB/s
127% Outstanding
Read 194
Write 216
Mixed 51.1
SusWrite 191
216% 163 MB/s
4K Read 15.8
4K Write 17.5
4K Mixed 0.9
684% 11.4 MB/s
DQ Read 19.2
DQ Write 22.8
DQ Mixed 15.9
1,388% 19.3 MB/s
192GB free (System drive), PID 0578
Operating at USB 3.0 Speed
SusWrite @10s intervals: 52 59 58 59 67 69 MB/s
65.7% Good
Read 175
Write 60.7
Mixed 90.3
SusWrite 60.7
114% 96.6 MB/s
4K Read 9.7
4K Write 8.1
4K Mixed 3.9
444% 7.23 MB/s
DQ Read 20.3
DQ Write 18.8
DQ Mixed 16.6
1,279% 18.6 MB/s
218GB free, PID 0578
Operating at USB 2.1 Speed
SusWrite @10s intervals: 28 26 28 28 26 28 MB/s
26.8% Poor
Read 32.5
Write 27.8
Mixed 30.2
SusWrite 27.3
40% 29.5 MB/s
4K Read 5.8
4K Write 4.8
4K Mixed 3.2
294% 4.6 MB/s
202 MORE »
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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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