TEST
YOUR USB

Seagate (ExtHD)

USB 256GB

▲ 500 ▼

Release date ≈ Q3 2014.

Average Bench: 110% (5th of 639)

Based on 31 user benchmarks.  Device: VID 0bc2 PID a013 Model: Seagate USB
Poor: 14%Average: 110% Great: 180%

Outstanding average bench

The Seagate USB 256GB averaged 10.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the Seagate USB 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 32.3MB/s
Avg. 4K Random Write Speed 18.5MB/s

Terrible consistency

The range of scores (95th - 5th percentile) for the Seagate USB 256GB is 166%. This is a particularly wide range which indicates that the Seagate USB 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 154MB/s
Avg. 4K Random Read Speed 13.1MB/s
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Average Bench

(Based on 31 samples)
Rank 5110%
Min Avg Max
9.7 Read 154 253
3.8 Write 140 238
2.8 Mixed 134 241
3.4 SusWrite 136 238
190% 141 MB/s
Min Avg Max
0.6 4K Read 13.1 21.7
0 4K Write 18.5 42.4
0 4K Mixed 11.7 23.6
1,076% 14.4 MB/s
Min Avg Max
11 DQ Read 18.7 25.7
13.1 DQ Write 32.3 60.5
4.61 DQ Mixed 17.6 30.1
1,766% 22.9 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
237GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 239 240 242 242 242 210 MB/s
170% Outstanding
Read 240
Write 233
Mixed 197
SusWrite 236
308% 226 MB/s
4K Read 18.1
4K Write 25.8
4K Mixed 20.1
1,628% 21.3 MB/s
DQ Read 19
DQ Write 26
DQ Mixed 20.4
1,649% 21.8 MB/s
132GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 215 217 185 209 218 217 MB/s
159% Outstanding
Read 206
Write 201
Mixed 200
SusWrite 210
280% 204 MB/s
4K Read 19.1
4K Write 25.5
4K Mixed 21.9
1,683% 22.2 MB/s
DQ Read 21.5
DQ Write 27.8
DQ Mixed 23.9
1,838% 24.4 MB/s
19GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 170 161 153 213 187 190 MB/s
155% Outstanding
Read 232
Write 213
Mixed 211
SusWrite 179
281% 209 MB/s
4K Read 21.4
4K Write 25.3
4K Mixed 23.6
1,743% 23.4 MB/s
DQ Read 25.1
DQ Write 28.4
DQ Mixed 26.4
1,957% 26.6 MB/s
235GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 211 210 207 194 190 194 MB/s
155% Outstanding
Read 221
Write 192
Mixed 199
SusWrite 201
275% 203 MB/s
4K Read 19.7
4K Write 24.3
4K Mixed 20.2
1,587% 21.4 MB/s
DQ Read 21.8
DQ Write 30.4
DQ Mixed 25.1
1,969% 25.8 MB/s
238GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 178 182 194 187 211 212 MB/s
152% Outstanding
Read 227
Write 208
Mixed 201
SusWrite 194
280% 208 MB/s
4K Read 18.7
4K Write 23.5
4K Mixed 8.9
1,171% 17 MB/s
DQ Read 19.3
DQ Write 37.6
DQ Mixed 10.5
1,708% 22.5 MB/s
237GB free, PID a013
Operating at USB 3.0 Speed
SusWrite @10s intervals: 193 214 223 211 205 210 MB/s
144% Outstanding
Read 204
Write 190
Mixed 166
SusWrite 210
261% 192 MB/s
4K Read 14.3
4K Write 21.4
4K Mixed 15.9
1,322% 17.2 MB/s
DQ Read 18.8
DQ Write 38
DQ Mixed 19.6
2,029% 25.5 MB/s
111GB free, PID a013
Operating at USB 2.1 Speed
SusWrite @10s intervals: 26 25 26 28 25 25 MB/s
14% Very poor
Read 55.1
Write 32.2
Mixed 35.5
SusWrite 25.8
47% 37.2 MB/s
4K Read 1.6
4K Write 0
4K Mixed 0.9
36% 0.83 MB/s
160GB free, PID a013
Operating at USB 2.1 Speed
SusWrite @10s intervals: 3 2.9 4.2 3.2 3.5 3.9 MB/s
8.38% Terrible
Read 50.6
Write 3.8
Mixed 2.8
SusWrite 3.4
12% 15.1 MB/s
4K Read 1.3
4K Write 0
4K Mixed 0
5% 0.43 MB/s
31 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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