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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. costs $0.1138/GB. Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ offers 71% 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. — 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 | 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. |
|---|---|---|
| Brand | Western Digital | |
| Capacity | 4 TB | 1.2TB |
| $/GB | $0.0324 | $0.1138 |
| Price | $129.77 | $136.60 |
| 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. at $0.1138//GB — that's roughly 71% 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. starts at $136.60 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. at $0.1138//GB. That is approximately 71% 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 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. for the cheapest price?
The cheapest price for the 1.2TB 2.5' Hard Drive E7W47A 2040 Plug in Module 10K 730704-001 C. is $136.60 at Newegg, which works out to $0.1138/GB.