TEST
YOUR USB

WDC (ExtHD)

WD20 PURX-64P6ZY0 2TB

▲ 500 ▼

Release date ≈ Q4 2015.

Average Bench: 37.7% (49th of 639)

Based on 7 user benchmarks.  Device: VID 174c PID 55aa Model: WDC WD20 PURX-64P6ZY0
Poor: 16%Average: 37.7% Great: 56%

Poor average bench

The WDC WD20 PURX-64P6ZY0 2TB averaged 62.3% 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 1.78MB/s
Avg. Sustained Write Speed 92.6MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the WDC WD20 PURX-64P6ZY0 2TB is 39.6%. This is a relatively wide range which indicates that the WDC WD20 PURX-64P6ZY0 2TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.69MB/s
Avg. Sequential Read Speed 86MB/s
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Average Bench

(Based on 7 samples)
Rank 4937.7%
Min Avg Max
32.1 Read 86 125
27.6 Write 87.8 139
28.5 Mixed 59.7 91.1
37.1 SusWrite 92.6 140
111% 81.5 MB/s
Min Avg Max
0.5 4K Read 0.69 0.9
1.1 4K Write 1.78 2.5
0.23 4K Mixed 0.62 1
84.2% 1.03 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
1.5TB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 138 140 141 141 141 141 MB/s
56% Above average
Read 123
Write 139
Mixed 68.8
SusWrite 140
160% 118 MB/s
4K Read 0.8
4K Write 2.4
4K Mixed 1
119% 1.4 MB/s
1TB free, PID 55aa
Operating at USB 2.1 Speed
52.2% Above average
Read 125
Write 134
Mixed 91.1
148% 117 MB/s
4K Read 0.74
4K Write 1.56
4K Mixed 0.23
64% 0.85 MB/s
149GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 112 112 112 113 112 112 MB/s
48.8% Average
Read 114
Write 113
Mixed 68
SusWrite 112
137% 102 MB/s
4K Read 0.9
4K Write 2.5
4K Mixed 1
122% 1.47 MB/s
695GB free, PID 55aa
Operating at USB 3.0 Speed
41.9% Average
Read 102
Write 97.4
Mixed 90.5
123% 96.8 MB/s
4K Read 0.57
4K Write 1.86
4K Mixed 0.27
75% 0.9 MB/s
17GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 78 70 84 84 85 84 MB/s
31.1% Below average
Read 69.2
Write 69.3
Mixed 40
SusWrite 80.8
88% 64.8 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.8
66% 0.8 MB/s
1TB free, PID 55aa
Operating at USB 2.1 Speed
SusWrite @10s intervals: 37 37 37 37 38 37 MB/s
17.2% Very poor
Read 36.3
Write 35
Mixed 31
SusWrite 37.1
48% 34.8 MB/s
4K Read 0.7
4K Write 1.2
4K Mixed 0.8
71% 0.9 MB/s
4GB free, PID 55aa
Operating at USB 2.1 Speed
16.4% Very poor
Read 32.1
Write 27.6
Mixed 28.5
37% 29.4 MB/s
4K Read 0.65
4K Write 1.82
4K Mixed 0.26
73% 0.91 MB/s
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