TEST
YOUR USB

ADATA (ExtHD)

SP 550 120GB

▲ 500 ▼

Release date ≈ Q3 2018.

Average Bench: 114% (3rd of 639)

Based on 3 user benchmarks.  Device: VID 1f75 PID 0621 Model: ADATA SP 550
Poor: 73%Average: 114% Great: 138%

Outstanding average bench

The ADATA SP 550 120GB averaged 14.5% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the ADATA SP 550 120GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 29.5MB/s
Avg. 4K-64Thread Mixed IO Speed 23.6MB/s

Unknown consistency

There are too few samples to reasonably determine how consistently this USB perfroms. This result should be interpreted with caution.

Weaknesses

Avg. Sequential Read Speed 161MB/s
Avg. Sustained Write Speed 72MB/s
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Average Bench

(Based on 3 samples)
Rank 3114%
Min Avg Max
42.5 Read 161 229
41.5 Write 149 214
41.7 Mixed 125 193
40.2 SusWrite 72 91.5
166% 127 MB/s
Min Avg Max
14.6 4K Read 19.4 25
17.7 4K Write 23 25.8
15.6 4K Mixed 19.5 21.5
1,519% 20.7 MB/s
Min Avg Max
15.8 DQ Read 22.2 28.5
19.4 DQ Write 29.5 38.7
17 DQ Mixed 23.6 27.1
1,889% 25.1 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
104GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 193 100 63 65 64 64 MB/s
138% Outstanding
Read 229
Write 214
Mixed 141
SusWrite 91.5
217% 169 MB/s
4K Read 25
4K Write 25.6
4K Mixed 21.4
1,691% 24 MB/s
DQ Read 28.5
DQ Write 30.5
DQ Mixed 26.7
2,051% 28.6 MB/s
102GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 198 84 57 56 56 55 MB/s
133% Outstanding
Read 213
Write 193
Mixed 193
SusWrite 84.3
224% 171 MB/s
4K Read 18.7
4K Write 25.8
4K Mixed 21.5
1,678% 22 MB/s
DQ Read 22.2
DQ Write 38.7
DQ Mixed 27.1
2,320% 29.3 MB/s
11GB free, PID 0621
Operating at USB 2.1 Speed
SusWrite @10s intervals: 41 42 43 42 42 31 MB/s
72.8% Very good
Read 42.5
Write 41.5
Mixed 41.7
SusWrite 40.2
57% 41.5 MB/s
4K Read 14.6
4K Write 17.7
4K Mixed 15.6
1,187% 16 MB/s
DQ Read 15.8
DQ Write 19.4
DQ Mixed 17
1,297% 17.4 MB/s
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Group Test Results

  • 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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Intel Core i5-12400F $133Nvidia RTX 4060-Ti $385Samsung 850 Evo 120GB $80
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