TEST
YOUR USB

WDC (ExtHD)

WD40EFRX-68N 4TB

▲ 500 ▼

Release date ≈ Q4 2018.

Average Bench: 43.1% (35th of 639)

Based on 13 user benchmarks.  Device: VID 2537 PID 1066 Model: WDC WD40EFRX-68N
Poor: 24%Average: 43.1% Great: 65%

Below average average bench

The WDC WD40EFRX-68N 4TB averaged 56.8% 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 2.38MB/s
Avg. Sustained Write Speed 101MB/s

Average consistency

The range of scores (95th - 5th percentile) for the WDC WD40EFRX-68N 4TB is 41.8%. This is a relatively wide range which indicates that the WDC WD40EFRX-68N 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.94MB/s
Avg. Sequential Read Speed 93.6MB/s
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Average Bench

(Based on 13 samples)
Rank 3543.1%
Min Avg Max
39 Read 93.6 177
32.8 Write 76.6 172
32.7 Mixed 64.8 119
41.9 SusWrite 101 160
113% 84 MB/s
Min Avg Max
0.9 4K Read 0.94 1
0.9 4K Write 2.38 2.9
0.6 4K Mixed 0.96 1.1
117% 1.43 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
2TB free, PID 1066
Operating at USB 3.0 Speed
SusWrite @10s intervals: 153 155 153 154 155 154 MB/s
65.4% Good
Read 163
Write 172
Mixed 79
SusWrite 154
190% 142 MB/s
4K Read 0.9
4K Write 2.6
4K Mixed 0.9
122% 1.47 MB/s
3.5TB free, PID 1066
Operating at USB 3.0 Speed
SusWrite @10s intervals: 127 162 157 153 152 170 MB/s
62.2% Good
Read 177
Write 84.9
Mixed 100
SusWrite 154
166% 129 MB/s
4K Read 1
4K Write 0.9
4K Mixed 0.6
55% 0.83 MB/s
1.5TB free, PID 1066
Operating at USB 3.0 Speed
SusWrite @10s intervals: 155 160 165 160 165 157 MB/s
62% Good
Read 164
Write 82.7
Mixed 99.5
SusWrite 160
165% 127 MB/s
4K Read 1
4K Write 1
4K Mixed 0.6
58% 0.87 MB/s
188GB free, PID 1066
Operating at USB 3.0 Speed
SusWrite @10s intervals: 137 136 137 138 137 138 MB/s
50.1% Above average
Read 88.7
Write 32.8
Mixed 75.5
SusWrite 137
114% 83.6 MB/s
4K Read 0.9
4K Write 2.3
4K Mixed 1
116% 1.4 MB/s
188GB free, PID 1066
Operating at USB 3.0 Speed
SusWrite @10s intervals: 137 138 138 138 138 138 MB/s
49.9% Average
Read 88.9
Write 90
Mixed 77.8
SusWrite 138
138% 98.6 MB/s
4K Read 0.9
4K Write 2.2
4K Mixed 1
112% 1.37 MB/s
2.5TB free, PID 1066
Operating at USB 2.1 Speed
SusWrite @10s intervals: 43 42 43 43 43 43 MB/s
23.8% Poor
Read 39.2
Write 40.2
Mixed 34.8
SusWrite 42.7
54% 39.2 MB/s
4K Read 0.9
4K Write 2.8
4K Mixed 1
133% 1.57 MB/s
2.5TB free, PID 1066
Operating at USB 2.1 Speed
SusWrite @10s intervals: 42 42 42 42 43 43 MB/s
23.5% Poor
Read 40
Write 39.2
Mixed 32.7
SusWrite 42.3
52% 38.5 MB/s
4K Read 0.9
4K Write 2.7
4K Mixed 1
129% 1.53 MB/s
13 MORE »
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