The Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX costs $0.1000/GB while the WD - Purple 4TB Surveillance Internal Hard Drive costs $0.0350/GB. WD - Purple 4TB Surveillance Internal Hard Drive offers 65% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX vs WD - Purple 4TB Surveillance Internal Hard Drive — Which Is Better Value?
WD - Purple 4TB Surveillance Internal Hard Drive
Specification Comparison
| Spec | Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX | WD - Purple 4TB Surveillance Internal Hard Drive |
|---|---|---|
| Brand | Western Digital | Western Digital |
| Capacity | 1 TB | 4 TB |
| $/GB | $0.1000 | $0.0350 |
| Price | $99.99 | $139.99 |
| 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 - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to the Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX at $0.1000//GB — that's roughly 65% less per gigabyte.
The best deal for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, while the Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX starts at $99.99 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 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX and WD - Purple 4TB Surveillance Internal Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX or WD - Purple 4TB Surveillance Internal Hard Drive a better deal?
As of May 2026, WD - Purple 4TB Surveillance Internal Hard Drive offers better value at $0.0350//GB compared to Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX at $0.1000//GB. That is approximately 65% better value per gigabyte.
What is the price per GB of Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX?
The Western Digital 1TB WD Blue Mobile Hard Drive HDD - 5400 RPM, SATA 6 Gb/s, 128 MB Cache, 2.5" - WD10SPZX is currently priced at $0.1000/GB ($99.99 for 1 TB) at Amazon.
Where can I buy WD - Purple 4TB Surveillance Internal Hard Drive for the cheapest price?
The cheapest price for the WD - Purple 4TB Surveillance Internal Hard Drive is $139.99 at Best Buy, which works out to $0.0350/GB.