The Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ costs $0.0502/GB while the WD - Blue 4TB PC Internal Hard Drive for Desktops costs $0.0325/GB. WD - Blue 4TB PC Internal Hard Drive for Desktops offers 35% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ vs WD - Blue 4TB PC Internal Hard Drive for Desktops — Which Is Better Value?
WD - Blue 4TB PC Internal Hard Drive for Desktops
Specification Comparison
| Spec | Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ | WD - Blue 4TB PC Internal Hard Drive for Desktops |
|---|---|---|
| Brand | Western Digital | Western Digital |
| Capacity | 2 TB | 4 TB |
| $/GB | $0.0502 | $0.0325 |
| Price | $100.44 | $129.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the WD - Blue 4TB PC Internal Hard Drive for Desktops offers better value at $0.0325//GB compared to the Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ at $0.0502//GB — that's roughly 35% less per gigabyte.
The best deal for the WD - Blue 4TB PC Internal Hard Drive for Desktops is $129.99 at Best Buy, while the Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ starts at $100.44 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ and WD - Blue 4TB PC Internal Hard Drive for Desktops product page for detailed specifications and price history.
Frequently Asked Questions
Is Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ or WD - Blue 4TB PC Internal Hard Drive for Desktops a better deal?
As of May 2026, WD - Blue 4TB PC Internal Hard Drive for Desktops offers better value at $0.0325//GB compared to Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ at $0.0502//GB. That is approximately 35% better value per gigabyte.
What is the price per GB of Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ?
The Western Digital 2TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 64 MB Cache, 3.5" - WD23PURZ is currently priced at $0.0502/GB ($100.44 for 2 TB) at Amazon.
Where can I buy WD - Blue 4TB PC Internal Hard Drive for Desktops for the cheapest price?
The cheapest price for the WD - Blue 4TB PC Internal Hard Drive for Desktops is $129.99 at Best Buy, which works out to $0.0325/GB.