Compare Hard Disk Drives

Compare Western Digital Purple 18TB vs Purple 2TB

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  2. Hard Disk Drives
  3. Western Digital Purple 18TB 🆚 Western Digital Purple 2TB
Western Digital Purple 18TB and Western Digital Purple 2TB are both hard disk drives with the same Interface (SATA 6 Gb/s) and Form Factor (3.5"). The main differences are in Capacity, Cache and RPM.
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Western Digital Purple 18TB Surveillance SATA 6 Gb/s 512 MB Cache 3.5" - WD181PURP
Western Digital Purple 18TB
Western Digital Purple 2TB WD Surveillance SATA 6 Gb/s 256 MB Cache 3.5" WD22PURZ
Western Digital Purple 2TB
Prices
(Change region)
Out of Stock
$299.99
Out of Stock
$459.99
In Stock
$734.99
Last updated 46 minutes ago.
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Prices
(Change region)
In Stock
$142.99
Last updated 47 minutes ago.
In Stock
$169.99
In Stock
Free shipping
$305.36
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* Product prices and availability are subject to change frequently. Any price and availability information displayed on Amazon at the time of purchase will apply.
Brand
Western Digital
Brand
Western Digital
Model
WD181PURP
Model
WD22PURZ
Release Date
📅 May 2021
Release Date
📅 October 2021
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
View Details ►
Price history
View Details ►
Price/GB
$0.02
Price/GB
$0.04
GB/$1
60
GB/$1
26.67
Capacity
18000 GB
Capacity
2000 GB
Cache
512MB
Cache
256MB
RPM
7200
RPM
5400
Interface
SATA 6 Gb/s
Interface
SATA 6 Gb/s
Form Factor
3.5"
Form Factor
3.5"

Comparison and key differences summary

Reasons to buy the Western Digital Purple 18TB:

  • More Capacity (+16000 GB available)
  • Higher Revolutions Per Minute (+1800 RPM)
  • More Internal Cache (+256 MB available)

Buy now

Reasons to buy the Western Digital Purple 2TB:

  • 52% cheaper, you can save $157.00

Buy now

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