TEST
YOUR USB

ADATA (ExtHD)

HD650 1TB

▲ 500 ▼

Release date ≈ Q4 2014.

Average Bench: 30.7% (93rd of 639)

Based on 1,807 user benchmarks.  Device: VID 125f PID a35a Model: ADATA HD650
Poor: 12%Average: 30.7% Great: 47%

Poor average bench

The ADATA HD650 1TB averaged 69.2% 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. 4K Random Write Speed 1.86MB/s
Avg. Sequential Write Speed 70.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the ADATA HD650 1TB is 35%. This is a relatively wide range which indicates that the ADATA HD650 1TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.74MB/s
Avg. Sequential Read Speed 66.9MB/s
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Average Bench

(Based on 1,807 samples)
Rank 9330.7%
Min Avg Max
21.6 Read 66.9 117
18.8 Write 70.6 126
13.4 Mixed 39.1 86.1
22 SusWrite 69.4 117
83.1% 61.5 MB/s
Min Avg Max
0.3 4K Read 0.74 1.8
0.3 4K Write 1.86 4
0.2 4K Mixed 0.53 0.9
84% 1.04 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
693GB free, PID a35a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 92 118 123 115 115 116 MB/s
47.4% Average
Read 76.3
Write 132
Mixed 101
SusWrite 113
152% 106 MB/s
4K Read 1.5
4K Write 3.7
4K Mixed 0.7
155% 1.97 MB/s
569GB free, PID a35a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 99 102 103 103 103 102 MB/s
40.6% Average
Read 87.7
Write 87.6
Mixed 33.4
SusWrite 102
104% 77.7 MB/s
4K Read 0.5
4K Write 1.8
4K Mixed 0.6
84% 0.97 MB/s
449GB free, PID a35a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 85 91 91 91 90 91 MB/s
39.8% Below average
Read 90.4
Write 65.2
Mixed 52.6
SusWrite 89.6
98% 74.5 MB/s
4K Read 0.5
4K Write 2.3
4K Mixed 0.9
111% 1.23 MB/s
860GB free, PID a35a
Operating at USB 3.0 Speed
SusWrite @10s intervals: 70 53 54 70 72 68 MB/s
32.8% Below average
Read 90.2
Write 100
Mixed 35.7
SusWrite 64.5
95% 72.6 MB/s
4K Read 0.5
4K Write 1.8
4K Mixed 0.5
80% 0.93 MB/s
87GB free, PID a35a
Operating at USB 2.1 Speed
SusWrite @10s intervals: 24 24 24 24 24 24 MB/s
8.96% Terrible
Read 24.1
Write 24.1
Mixed 18
SusWrite 24.1
31% 22.6 MB/s
4K Read 0.9
4K Write 0
4K Mixed 0.6
24% 0.5 MB/s
1,807 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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