Release date: Q3 2012.


Release date: Q3 2016.

Real World Speed
Performance profile from 123,137 user samples
79,711 User Benchmarks
Best Bench: 85% 2TB free
Worst Bench: 42% 46GB free
Poor: 42% Great: 85%
SPEED RANK: 175th / 1015
43,426 User Benchmarks
Best Bench: 116% 2.5TB free
Worst Bench: 62% 579GB free (System drive)
Poor: 62% Great: 116%
SPEED RANK: 8th / 1015
Effective Speed
Effective HDD Speed
64.6 % 97 % Much faster effective speed.
Avg. Sequential Read Speed
117 MB/s 172 MB/s Much faster read speed.
Avg. Sequential Write Speed
110 MB/s 137 MB/s Faster write speed.
4K Read
Avg. 4K Random Read Speed
0.85 MB/s Faster random read.
0.69 MB/s
4K Write
Avg. 4K Random Write Speed
2.22 MB/s Much faster random write.
1.62 MB/s
Avg. Sequential Mixed IO Speed
71.6 MB/s 78.5 MB/s Slightly faster mixed IO speed.
4K Mixed
Avg. 4K Random Mixed IO Speed
0.89 MB/s Faster random mixed IO.
0.77 MB/s
Avg. Sustained Write Speed
108 MB/s 166 MB/s Much faster sustained write speed.
Peak Sequential Read Speed
153 MB/s 204 MB/s Much faster peak read speed.
Peak Sequential Write Speed
143 MB/s 175 MB/s Faster peak write speed.
4K Read
Peak 4K Random Read Speed
1 MB/s Faster peak random read.
0.8 MB/s
4K Write
Peak 4K Random Write Speed
2.7 MB/s Much faster peak random write.
1.9 MB/s
Peak Sequential Mixed IO Speed
93 MB/s +5% 88.7 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed
1 MB/s Slightly faster peak random mixed IO.
0.9 MB/s
Peak Sequential Sustained Write 60s Average
144 MB/s 203 MB/s Much faster peak sustained write speed.
Market Share
Based on 19,797,013 HDDs tested.
Market Share
Market Share (trailing 30 days)
0.53 % +4% 0.51 %
Value For Money
39.5 % 72.8 % Hugely better value.
User Rating
UBM User Rating
53 % 84 % Much more popular.
Price (score)
$65 Cheaper.
85 Months 36 Months Much more recent.

The (WD20EZRX) is Western Digital's latest green drive. I don't see what's green about it considering that it draws 5.5 watts even when idle, which is about average nowadays. With peak sequential lab read/write speeds of 150 MB/s the performance profile is approximately 20% below average for recent Hard drive. It's not all bad news as the WD Green is priced aggressively so despite its relatively weak performance it still represents reasonable value for money, at least within the 2TB category. Due to economies of scale, larger capacity drives nearly always yield better value for money. Compared to the 3GB 7200.14 Barracuda, performance is very similar but the barracuda offers 50% more capacity for 36% more money. [Dec '13 HDrivePro]


The new 3TB Seagate Barracuda 2016 (ST3000DM008) replaces its hugely successful predecessor, the 3TB Barracuda 7200.14 2011 (ST3000DM001). Comparing performance between the two models shows that the newer drive has 12% faster sequential speeds, comparable 4K speeds, improved mixed sequential speed and reduced mixed 4K speed. Overall, the effective speed is 12% faster on the 2016 model. Since there is normally little price difference between the two models the 2016 version is the clear winner especially for use as a backup drive with its impressive sequential read and write speeds of nearly 200 MBps. See the current value leaders here[Feb '17 HDrivePro]


Hard Drive Rankings (Price vs Performance) September 2019 HDD Rankings.



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