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Seagate 8TB ST8000DM002 vs Western Digital Caviar Green 2TB WD20EARS vs Western Digital Black 4TB WD4004FZWX vs HGST Ultrastar He8 8TB

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Brand
Seagate
Brand
Western Digital
Brand
Western Digital
Brand
HGST
Model
ST8000DM002
Model
WD20EARS
Model
WD4004FZWX
Model
0F23668
Release Date
📅 February 2016
Release Date
-
Release Date
-
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
User reviews
User reviews
Performance (Charts)
n/a
Performance (Charts)
121st / 551
Performance (Charts)
6th / 551
Performance (Charts)
8th / 551
Effective Value
-
Effective Value
148th / 158
Effective Value
94th / 158
Effective Value
123rd / 158
Price history
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Price history
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Price history
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Price history
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Price/GB
$0.04
Price/GB
$0.07
Price/GB
$0.04
Price/GB
$0.03
GB/$1
26.36
GB/$1
14.32
GB/$1
22.99
GB/$1
33.41
Capacity
8000 GB
Capacity
2000 GB
Capacity
4000 GB
Capacity
8000 GB
Cache
256MB
Cache
64MB
Cache
128MB
Cache
128MB
RPM
7200
RPM
5400
RPM
7200
RPM
7200
Interface
SATA 6 Gb/s
Interface
SATA 3 Gb/s
Interface
SATA 6 Gb/s
Interface
SATA 6 Gb/s
Form Factor
3.5"
Form Factor
3.5"
Form Factor
3.5"
Form Factor
3.5"
Seagate Barracuda 1TB 1TB
$22.99
Seagate Barracuda 3TB 3TB
$63.00
Seagate Barracuda 4TB 4TB
$61.00
Seagate ST5000DM002 5TB
$255.95
Seagate 6TB ST6000DM001 6TB
$211.25
Seagate 8TB ST8000DM002 8TB
$303.45

What are the differences between Seagate 8TB ST8000DM002 and Western Digital Caviar Green 2TB WD20EARS and Western Digital Black 4TB WD4004FZWX and HGST Ultrastar He8 8TB? Analyze head-to-head all specifications and features to find out the better hard disk.
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