The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ costs $0.0324/GB while the 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD costs $0.3870/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 92% better value per gigabyte as of May 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ vs 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD — Which Is Better Value?
Specification Comparison
| Spec | Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ | 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD |
|---|---|---|
| Brand | Western Digital | 42D0677 |
| Capacity | 4 TB | 146GB |
| $/GB | $0.0324 | $0.3870 |
| Price | $129.77 | $56.50 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to the 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD at $0.3870//GB — that's roughly 92% less per gigabyte.
The best deal for the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is $129.77 at Amazon, while the 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD starts at $56.50 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ and 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD product page for detailed specifications and price history.
Frequently Asked Questions
Is Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ or 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD a better deal?
As of May 2026, Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers better value at $0.0324//GB compared to 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD at $0.3870//GB. That is approximately 92% better value per gigabyte.
What is the price per GB of Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ?
The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ is currently priced at $0.0324/GB ($129.77 for 4 TB) at Amazon.
Where can I buy 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD for the cheapest price?
The cheapest price for the 42D0677 42D0678 146GB 15K 6G SFF HS 2.5'' Hard Drive HDD is $56.50 at Newegg, which works out to $0.3870/GB.