TEST
YOUR USB

BUFFALO (ExtHD)

HD-LDS-A 4TB

▲ 500 ▼

Release date ≈ Q2 2019.

Average Bench: 52.5% (21st of 639)

Based on 10 user benchmarks.  Device: VID 0411 PID 02c3 Model: BUFFALO HD-LDS-A
Poor: 19%Average: 52.5% Great: 69%

Average average bench

The BUFFALO HD-LDS-A 4TB averaged 47.4% 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 2.75MB/s
Avg. Sustained Write Speed 123MB/s

Below average consistency

The range of scores (95th - 5th percentile) for the BUFFALO HD-LDS-A 4TB is 50.6%. This is a relatively wide range which indicates that the BUFFALO HD-LDS-A 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 1.34MB/s
Avg. Sequential Read Speed 117MB/s
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Average Bench

(Based on 10 samples)
Rank 2152.5%
Min Avg Max
30.7 Read 117 172
30.3 Write 112 164
27.3 Mixed 70.7 93.2
33.6 SusWrite 123 177
142% 106 MB/s
Min Avg Max
0.7 4K Read 1.34 2.6
2 4K Write 2.75 4
0.5 4K Mixed 0.81 1
126% 1.63 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3.5TB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 175 178 177 176 178 178 MB/s
70.4% Very good
Read 172
Write 164
Mixed 80.2
SusWrite 177
198% 148 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 1
112% 1.37 MB/s
3TB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 153 164 164 159 160 162 MB/s
69.4% Good
Read 150
Write 116
Mixed 86.1
SusWrite 160
171% 128 MB/s
4K Read 1.8
4K Write 4
4K Mixed 0.7
166% 2.17 MB/s
3TB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 150 160 158 156 158 162 MB/s
68.9% Good
Read 158
Write 117
Mixed 93.2
SusWrite 157
174% 132 MB/s
4K Read 2.6
4K Write 3.6
4K Mixed 0.8
159% 2.33 MB/s
1.5TB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 150 155 154 158 159 160 MB/s
63.8% Good
Read 119
Write 118
Mixed 71.5
SusWrite 156
158% 116 MB/s
4K Read 1.3
4K Write 4
4K Mixed 0.7
165% 2 MB/s
946GB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 126 125 126 127 127 126 MB/s
53.5% Above average
Read 136
Write 139
Mixed 61.9
SusWrite 126
154% 116 MB/s
4K Read 0.7
4K Write 2
4K Mixed 0.6
91% 1.1 MB/s
562GB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 100 109 107 106 109 105 MB/s
48.4% Average
Read 106
Write 120
Mixed 87.6
SusWrite 106
144% 105 MB/s
4K Read 2.6
4K Write 3
4K Mixed 0.5
129% 2.03 MB/s
115GB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 87 85 88 90 90 89 MB/s
39.1% Below average
Read 91.2
Write 93.8
Mixed 61.7
SusWrite 88
113% 83.7 MB/s
4K Read 0.9
4K Write 2.1
4K Mixed 0.9
105% 1.3 MB/s
635GB free, PID 02c3
Operating at USB 3.0 Speed
SusWrite @10s intervals: 87 88 87 88 87 87 MB/s
38% Below average
Read 82.7
Write 87.2
Mixed 62.4
SusWrite 87.3
109% 79.9 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 0.9
109% 1.33 MB/s
3.5TB free, PID 02c3
Operating at USB 2.1 Speed
SusWrite @10s intervals: 33 34 34 34 34 33 MB/s
18.7% Very poor
Read 30.7
Write 30.3
Mixed 27.3
SusWrite 33.6
42% 30.5 MB/s
4K Read 0.8
4K Write 2.2
4K Mixed 1
112% 1.33 MB/s
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