TEST
YOUR USB

ADATA (ExtHD)

HM900 2TB

▲ 500 ▼

Release date ≈ Q3 2016.

Average Bench: 52.3% (21st of 639)

Based on 33 user benchmarks.  Device: VID 125f PID a43a Model: ADATA HM900
Poor: 13%Average: 52.3% Great: 74%

Average average bench

The ADATA HM900 2TB averaged 47.6% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. Sustained Write Speed 126MB/s
Avg. Sequential Write Speed 118MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the ADATA HM900 2TB is 61.2%. This is a particularly wide range which indicates that the ADATA HM900 2TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.69MB/s
Avg. 4K Random Mixed IO Speed 0.53MB/s
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Average Bench

(Based on 33 samples)
Rank 2152.3%
Min Avg Max
30.6 Read 135 205
21.3 Write 118 183
5.18 Mixed 66.5 118
18.8 SusWrite 126 203
147% 111 MB/s
Min Avg Max
0.06 4K Read 0.69 0.94
0.37 4K Write 1.59 6.5
0.2 4K Mixed 0.53 0.9
74.8% 0.94 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
1.5TB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 199 202 200 201 193 196 MB/s
78.1% Very good
Read 205
Write 160
Mixed 87.6
SusWrite 199
213% 163 MB/s
4K Read 0.7
4K Write 1.6
4K Mixed 0.8
84% 1.03 MB/s
616GB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 183 181 186 185 185 186 MB/s
71.9% Very good
Read 184
Write 140
Mixed 88.7
SusWrite 184
196% 149 MB/s
4K Read 0.7
4K Write 1.6
4K Mixed 0.7
81% 1 MB/s
2TB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 158 187 186 186 188 187 MB/s
71.7% Very good
Read 179
Write 154
Mixed 86.1
SusWrite 182
199% 150 MB/s
4K Read 0.7
4K Write 1.9
4K Mixed 0.8
94% 1.13 MB/s
1.5TB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 134 130 136 136 140 143 MB/s
53.8% Above average
Read 154
Write 152
Mixed 75.4
SusWrite 136
172% 129 MB/s
4K Read 0.8
4K Write 0.5
4K Mixed 0.5
37% 0.6 MB/s
89GB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 65 77 76 79 77 78 MB/s
49.6% Average
Read 89.8
Write 102
Mixed 31.9
SusWrite 75.4
99% 74.8 MB/s
4K Read 0.6
4K Write 6.5
4K Mixed 0.4
237% 2.5 MB/s
380GB free, PID a43a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 114 111 111 113 112 113 MB/s
40.9% Average
Read 101
Write 101
Mixed 49.2
SusWrite 112
122% 90.9 MB/s
4K Read 0.8
4K Write 0.5
4K Mixed 0.4
34% 0.57 MB/s
33 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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