TEST
YOUR USB

JMicron (ExtHD)

Generic 512GB

▲ 500 ▼

Release date ≈ Q2 2017.

Average Bench: 192% (1st of 639)

Based on 16 user benchmarks.  Device: VID 152d PID 0567 Model: JMicron Generic
Poor: 122%Average: 192% Great: 272%

Outstanding average bench

The JMicron Generic 512GB averaged 92.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the JMicron Generic 512GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 33.7MB/s
Avg. 4K Random Write Speed 24.7MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the JMicron Generic 512GB is 150%. This is a particularly wide range which indicates that the JMicron Generic 512GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 18.2MB/s
Avg. Sequential Read Speed 314MB/s
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Average Bench

(Based on 16 samples)
Rank 1192%
Min Avg Max
64.3 Read 314 396
137 Write 328 407
41 Mixed 270 394
13.1 SusWrite 295 407
411% 302 MB/s
Min Avg Max
4.7 4K Read 18.2 25.2
5.4 4K Write 24.7 45.6
4.9 4K Mixed 18.6 31.3
1,542% 20.5 MB/s
Min Avg Max
17.2 DQ Read 22.3 29.8
23.5 DQ Write 33.7 60.8
10.1 DQ Mixed 23.3 38.1
2,022% 26.4 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
93GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 407 407 407 407 407 407 MB/s
272% Outstanding
Read 396
Write 407
Mixed 342
SusWrite 407
530% 388 MB/s
4K Read 25.2
4K Write 39.1
4K Mixed 31.3
2,488% 31.9 MB/s
DQ Read 27.6
DQ Write 43.8
DQ Mixed 32.4
2,694% 34.6 MB/s
375GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 387 386 395 399 397 398 MB/s
222% Outstanding
Read 374
Write 391
Mixed 351
SusWrite 394
519% 377 MB/s
4K Read 17.9
4K Write 25.4
4K Mixed 20
1,611% 21.1 MB/s
DQ Read 19.3
DQ Write 38.7
DQ Mixed 25.7
2,262% 27.9 MB/s
396GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 406 406 405 406 406 406 MB/s
219% Outstanding
Read 321
Write 392
Mixed 299
SusWrite 406
494% 354 MB/s
4K Read 20.9
4K Write 25.7
4K Mixed 21.7
1,690% 22.8 MB/s
DQ Read 22.4
DQ Write 29.7
DQ Mixed 23.7
1,899% 25.3 MB/s
370GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 235 333 349 360 360 353 MB/s
210% Outstanding
Read 360
Write 376
Mixed 321
SusWrite 332
473% 347 MB/s
4K Read 22.3
4K Write 26.2
4K Mixed 23.2
1,763% 23.9 MB/s
DQ Read 24.4
DQ Write 36.5
DQ Mixed 27.8
2,278% 29.6 MB/s
399GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 292 258 274 269 262 261 MB/s
189% Outstanding
Read 370
Write 352
Mixed 266
SusWrite 269
418% 314 MB/s
4K Read 15.2
4K Write 23.9
4K Mixed 18.9
1,512% 19.3 MB/s
DQ Read 19.2
DQ Write 32.5
DQ Mixed 22.1
1,928% 24.6 MB/s
470GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 298 324 330 334 332 331 MB/s
160% Outstanding
Read 215
Write 328
Mixed 202
SusWrite 325
379% 267 MB/s
4K Read 14.5
4K Write 17.7
4K Mixed 16
1,200% 16.1 MB/s
DQ Read 17.2
DQ Write 24.4
DQ Mixed 20
1,574% 20.5 MB/s
322GB free, PID 0567
Operating at USB 3.0 Speed
SusWrite @10s intervals: 236 131 122 108 108 121 MB/s
134% Outstanding
Read 176
Write 169
Mixed 133
SusWrite 138
206% 154 MB/s
4K Read 19.9
4K Write 24
4K Mixed 19.3
1,547% 21.1 MB/s
DQ Read 21.4
DQ Write 28.9
DQ Mixed 23.8
1,872% 24.7 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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