TEST
YOUR USB

BUFFALO (ExtHD)

HD-NRLD-A 4TB

▲ 500 ▼

Release date ≈ Q1 2019.

Average Bench: 60.4% (14th of 639)

Based on 25 user benchmarks.  Device: VID 0411 PID 02c9 Model: BUFFALO HD-NRLD-A
Poor: 19%Average: 60.4% Great: 83%

Above average average bench

The BUFFALO HD-NRLD-A 4TB averaged 39.6% 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. 4K Random Write Speed 4.76MB/s
Avg. Sustained Write Speed 129MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the BUFFALO HD-NRLD-A 4TB is 64.1%. This is a particularly wide range which indicates that the BUFFALO HD-NRLD-A 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 2.91MB/s
Avg. 4K Random Mixed IO Speed 0.73MB/s
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Average Bench

(Based on 25 samples)
Rank 1460.4%
Min Avg Max
21.2 Read 117 178
20.8 Write 114 184
12.8 Mixed 69.4 112
6 SusWrite 129 183
145% 107 MB/s
Min Avg Max
0.6 4K Read 2.91 10.2
0.6 4K Write 4.76 7.7
0.3 4K Mixed 0.73 1.2
198% 2.8 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
2TB free, PID 02c9
Operating at USB 3.0 Speed
SusWrite @10s intervals: 176 180 180 179 179 183 MB/s
76.9% Very good
Read 115
Write 110
Mixed 78.6
SusWrite 179
167% 121 MB/s
4K Read 1.9
4K Write 6.7
4K Mixed 0.5
252% 3.03 MB/s
1.5TB free, PID 02c9
Operating at USB 3.0 Speed
SusWrite @10s intervals: 157 165 164 162 162 165 MB/s
55.7% Above average
Read 120
Write 140
Mixed 79.4
SusWrite 162
173% 125 MB/s
4K Read 1.8
4K Write 0.8
4K Mixed 0.3
44% 0.97 MB/s
732GB free, PID 02c9
Operating at USB 3.0 Speed
SusWrite @10s intervals: 92 106 105 107 108 103 MB/s
52% Above average
Read 97.5
Write 99.5
Mixed 57.7
SusWrite 104
121% 89.6 MB/s
4K Read 1
4K Write 4.9
4K Mixed 0.4
184% 2.1 MB/s
17GB free, PID 02c9
Operating at USB 3.0 Speed
SusWrite @10s intervals: 75 85 59 59 77 87 MB/s
50.7% Above average
Read 172
Write 31.4
Mixed 98.6
SusWrite 73.4
110% 93.8 MB/s
4K Read 0.9
4K Write 3.1
4K Mixed 0.5
126% 1.5 MB/s
1TB free, PID 02c9
Operating at USB 2.1 Speed
SusWrite @10s intervals: 35 38 39 39 39 39 MB/s
33.5% Below average
Read 34.6
Write 32.1
Mixed 27.3
SusWrite 37.9
45% 33 MB/s
4K Read 1.2
4K Write 6.5
4K Mixed 0.5
242% 2.73 MB/s
2TB free, PID 02c9
Operating at USB 2.1 Speed
SusWrite @10s intervals: 5.9 6.1 6 6 6 6 MB/s
19.2% Very poor
Read 26.7
Write 22.4
Mixed 21.2
SusWrite 6
24% 19.1 MB/s
4K Read 1
4K Write 4.5
4K Mixed 0.5
174% 2 MB/s
25 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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