TEST
YOUR USB

ST330006 (ExtHD)

51AS 3TB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 44% (32nd of 639)

Based on 6 user benchmarks.  Device: VID 05e3 PID 0731 Model: ST330006 51AS
Poor: 36%Average: 44% Great: 60%

Below average average bench

The ST330006 51AS 3TB averaged 56.0% 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 2.08MB/s
Avg. Sustained Write Speed 106MB/s

Good consistency

The range of scores (95th - 5th percentile) for the ST330006 51AS 3TB is 23.7%. This is a relatively narrow range which indicates that the ST330006 51AS 3TB performs reasonably consistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.82MB/s
Avg. Sequential Read Speed 98.5MB/s
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Average Bench

(Based on 6 samples)
Rank 3244%
Min Avg Max
74.8 Read 98.5 137
86.1 Write 104 147
57.6 Mixed 66.5 81.7
85.9 SusWrite 106 152
128% 93.8 MB/s
Min Avg Max
0.8 4K Read 0.82 0.9
2 4K Write 2.08 2.2
1 4K Mixed 1.07 1.1
110% 1.32 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
239GB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 147 154 154 153 153 152 MB/s
59.6% Above average
Read 137
Write 147
Mixed 66.8
SusWrite 152
170% 126 MB/s
4K Read 0.9
4K Write 2.1
4K Mixed 1
109% 1.33 MB/s
1.5TB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 134 133 137 136 133 133 MB/s
54.3% Above average
Read 124
Write 128
Mixed 81.7
SusWrite 134
159% 117 MB/s
4K Read 0.8
4K Write 2.2
4K Mixed 1.1
115% 1.37 MB/s
155GB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 90 89 85 87 93 87 MB/s
38.7% Below average
Read 88
Write 87.5
Mixed 65.3
SusWrite 88.4
112% 82.3 MB/s
4K Read 0.8
4K Write 2.1
4K Mixed 1
108% 1.3 MB/s
362GB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 87 88 88 87 87 89 MB/s
38.2% Below average
Read 86.2
Write 86.1
Mixed 66.2
SusWrite 87.5
111% 81.5 MB/s
4K Read 0.8
4K Write 2.1
4K Mixed 1.1
112% 1.33 MB/s
282GB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 89 87 86 88 87 87 MB/s
37.1% Below average
Read 80.8
Write 87.2
Mixed 61.2
SusWrite 87.4
108% 79.2 MB/s
4K Read 0.8
4K Write 2
4K Mixed 1.1
108% 1.3 MB/s
282GB free, PID 0731
Operating at USB 3.0 Speed
SusWrite @10s intervals: 84 85 87 85 88 87 MB/s
35.9% Below average
Read 74.8
Write 89.8
Mixed 57.6
SusWrite 85.9
106% 77 MB/s
4K Read 0.8
4K Write 2
4K Mixed 1.1
108% 1.3 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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