TEST
YOUR USB

ASMedia (ExtHD)

USB 3.0 Device 256GB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 139% (3rd of 639)

Based on 7 user benchmarks.  Device: VID 174c PID 55aa Model: ASMedia USB 3.0 Device
Poor: 110%Average: 139% Great: 168%

Outstanding average bench

The ASMedia USB 3.0 Device 256GB averaged 39.1% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the ASMedia USB 3.0 Device 256GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 38.6MB/s
Avg. 4K Random Write Speed 26.6MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the ASMedia USB 3.0 Device 256GB is 58.2%. This is a relatively wide range which indicates that the ASMedia USB 3.0 Device 256GB performs inconsistently under varying real world conditions.

Weaknesses

Avg. Sequential Read Speed 206MB/s
Avg. Sustained Write Speed 109MB/s
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Average Bench

(Based on 7 samples)
Rank 3139%
Min Avg Max
26 Read 206 278
106 Write 185 290
49.5 Mixed 159 270
1.6 SusWrite 109 273
216% 165 MB/s
Min Avg Max
11 4K Read 16.1 18.1
19.5 4K Write 26.6 43.8
10.8 4K Mixed 18.4 22.9
1,590% 20.4 MB/s
Min Avg Max
14.6 DQ Read 19.1 22
32.9 DQ Write 38.6 58.6
15.2 DQ Mixed 21.4 26
2111% 26.3 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
195GB free (System drive), PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 253 272 298 278 264 274 MB/s
168% Outstanding
Read 268
Write 290
Mixed 270
SusWrite 273
380% 276 MB/s
4K Read 17.2
4K Write 21.3
4K Mixed 17.4
1,380% 18.6 MB/s
DQ Read 22
DQ Write 34.4
DQ Mixed 26
2,136% 27.5 MB/s
50GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 77 89 107 125 99 98 MB/s
144% Outstanding
Read 278
Write 106
Mixed 106
SusWrite 99.4
171% 148 MB/s
4K Read 18.1
4K Write 25.4
4K Mixed 19.4
1,591% 21 MB/s
DQ Read 20.4
DQ Write 35.5
DQ Mixed 21.8
2,025% 25.9 MB/s
149GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 197 150 141 127 75 124 MB/s
142% Outstanding
Read 200
Write 224
Mixed 208
SusWrite 136
262% 192 MB/s
4K Read 18
4K Write 25.9
4K Mixed 20.9
1,659% 21.6 MB/s
DQ Read 19
DQ Write 37.4
DQ Mixed 24.1
2,162% 26.8 MB/s
212GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 1.5 1.6 1.8 1.8 1.6 1.4 MB/s
141% Outstanding
Read 26
Write 196
Mixed 49.5
SusWrite 1.6
104% 68.4 MB/s
4K Read 11
4K Write 43.8
4K Mixed 22.9
2,310% 25.9 MB/s
DQ Read 14.6
DQ Write 58.6
DQ Mixed 15.2
2,564% 29.5 MB/s
131GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 213 73 111 77 124 151 MB/s
140% Outstanding
Read 199
Write 192
Mixed 212
SusWrite 125
246% 182 MB/s
4K Read 18.1
4K Write 26
4K Mixed 20.5
1,649% 21.5 MB/s
DQ Read 18.9
DQ Write 32.9
DQ Mixed 23.7
1,995% 25.2 MB/s
102GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 65 71 49 48 42 46 MB/s
110% Outstanding
Read 241
Write 138
Mixed 134
SusWrite 53.5
170% 141 MB/s
4K Read 14
4K Write 19.5
4K Mixed 10.8
1,082% 14.8 MB/s
DQ Read 19.8
DQ Write 35.2
DQ Mixed 19.9
1,948% 25 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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