TEST
YOUR USB

ADATA (ExtHD)

SP 900 128GB

▲ 500 ▼

Release date ≈ Q1 2016.

Average Bench: 135% (3rd of 639)

Based on 2 user benchmarks.  Device: VID 1f75 PID 0621 Model: ADATA SP 900
Poor: 120%Average: 135% Great: 151%

Outstanding average bench

The ADATA SP 900 128GB averaged 35.4% higher than the peak scores attained by the group leaders. This is an excellent result which ranks the ADATA SP 900 128GB near the top of the comparison list.

Strengths

Avg. 4K-64Thread Write Speed 26.9MB/s
Avg. 4K Random Write Speed 24.3MB/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 203MB/s
Avg. Sustained Write Speed 99MB/s
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Average Bench

(Based on 2 samples)
Rank 3135%
Min Avg Max
166 Read 203 240
120 Write 134 148
140 Mixed 159 179
99 SusWrite 99 99
191% 149 MB/s
Min Avg Max
16.5 4K Read 18.4 20.2
22.8 4K Write 24.3 25.8
10.8 4K Mixed 14 17.2
1,372% 18.9 MB/s
Min Avg Max
19.4 DQ Read 20.7 21.9
25.8 DQ Write 26.9 28.1
10.2 DQ Mixed 15.3 20.4
1,513% 21 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
97GB free, PID 0621
Operating at USB 3.0 Speed
151% Outstanding
Read 240
Write 148
Mixed 179
228% 189 MB/s
4K Read 20.2
4K Write 25.8
4K Mixed 10.8
1,322% 19 MB/s
DQ Read 21.9
DQ Write 25.8
DQ Mixed 10.2
1,304% 19.3 MB/s
37GB free, PID 0621
Operating at USB 3.0 Speed
SusWrite @10s intervals: 97 95 106 105 89 101 MB/s
120% Outstanding
Read 166
Write 120
Mixed 140
SusWrite 99
172% 131 MB/s
4K Read 16.5
4K Write 22.8
4K Mixed 17.2
1,422% 18.8 MB/s
DQ Read 19.4
DQ Write 28.1
DQ Mixed 20.4
1,722% 22.6 MB/s
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We highlight the best USB flash drive in terms of balanced performance and value for money using current prices, sequential read, sequential write , 4k read and 4k write speed. The speeds are combined to form a single effective speed which measures performance for tasks such as copying photos, music and videos. Effective speed is adjusted by current price and capacity to yield value for money. Finally thousands of individual user ratings are used to validate our benchmark figures. [USBFlashPro]

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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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