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Compare Seagate EE25.2 40GB ST940818SM vs Western Digital Purple Surveillance 4TB

Seagate EE25.2 40GB ST940818SM and Western Digital Purple Surveillance 4TB are both hard disk drives with the same RPM (5400). The main differences are in Capacity, Cache, Interface and Form Factor.
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Brand
Seagate
Brand
Western Digital
Model
ST940818SM
Model
WD43PURZ
Release Date
-
Release Date
📅 May 2023
* First availability for purchase, it may not correspond to the actual market launch date.
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Price history
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Price/GB
$0.68
Price/GB
$0.05
GB/$1
1.48
GB/$1
21.54
Capacity
40 GB
Capacity
4000 GB
Cache
8MB
Cache
256MB
RPM
5400
RPM
5400
Interface
SATA 3 Gb/s
Interface
SATA 6 Gb/s
Form Factor
2.5"
Form Factor
3.5"

Comparison and key differences summary

Reasons to buy the Seagate EE25.2 40GB ST940818SM:

  • 85% cheaper, you can save $158.69

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Reasons to buy the Western Digital Purple Surveillance 4TB:

  • More Capacity (+3960 GB available)
  • More Internal Cache (+248 MB available)

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