TEST
YOUR USB

OWC (ExtHD)

Envoy 251GB

▲ 500 ▼

Release date ≈ Q2 2018.

Average Bench: 122% (3rd of 639)

Based on 21 user benchmarks.  Device: VID 0525 PID 338a Model: OWC Envoy
Poor: 30%Average: 122% Great: 168%

Outstanding average bench

The OWC Envoy 251GB averaged 21.8% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the OWC Envoy 251GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 17.7MB/s
Avg. 4K-64Thread Mixed IO Speed 14.9MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the OWC Envoy 251GB is 138%. This is a particularly wide range which indicates that the OWC Envoy 251GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 12MB/s
Avg. Sequential Read Speed 218MB/s
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Average Bench

(Based on 21 samples)
Rank 3122%
Min Avg Max
12.8 Read 218 341
20.2 Write 203 292
15.6 Mixed 185 307
25.1 SusWrite 194 279
270% 200 MB/s
Min Avg Max
5.8 4K Read 12 15.4
1.8 4K Write 14.4 18.6
6.2 4K Mixed 12 15.7
940% 12.8 MB/s
Min Avg Max
12.2 DQ Read 14.5 16.3
7.6 DQ Write 17.7 20
9.03 DQ Mixed 14.9 17.2
1,163% 15.7 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
28GB free, PID 338a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 266 261 257 269 274 264 MB/s
158% Outstanding
Read 315
Write 260
Mixed 254
SusWrite 265
365% 274 MB/s
4K Read 13
4K Write 16.7
4K Mixed 14.3
1,103% 14.7 MB/s
DQ Read 14.4
DQ Write 18.7
DQ Mixed 15.8
1,227% 16.3 MB/s
88GB free, PID 338a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 206 227 237 239 243 242 MB/s
150% Outstanding
Read 329
Write 231
Mixed 248
SusWrite 232
340% 260 MB/s
4K Read 10.9
4K Write 16.1
4K Mixed 14.3
1,074% 13.8 MB/s
DQ Read 14.1
DQ Write 16.9
DQ Mixed 13.7
1,093% 14.9 MB/s
160GB free, PID 338a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 280 280 280 282 282 282 MB/s
124% Outstanding
Read 17.8
Write 285
Mixed 245
SusWrite 281
330% 207 MB/s
4K Read 14.3
4K Write 18.5
4K Mixed 10.5
1,039% 14.4 MB/s
DQ Read 14.9
DQ Write 19.5
DQ Mixed 16.3
1,273% 16.9 MB/s
83GB free, PID 338a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 27 28 29 29 30 30 MB/s
34.5% Below average
Read 30.6
Write 29.7
Mixed 29.7
SusWrite 28.9
40% 29.7 MB/s
4K Read 7.1
4K Write 7.2
4K Mixed 6.8
502% 7.03 MB/s
11GB free, PID 338a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 29 29 29 29 29 29 MB/s
22.4% Poor
Read 55.8
Write 26.1
Mixed 29.5
SusWrite 28.7
43% 35 MB/s
4K Read 10.8
4K Write 1.8
4K Mixed 6.5
322% 6.37 MB/s
21 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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