The Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ costs $0.0487/GB while the 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 costs $0.0212/GB. 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 offers 57% better value per gigabyte as of June 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 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 — 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 | 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 |
|---|---|---|
| Brand | Western Digital | HP |
| Capacity | 4 TB | 4TB |
| $/GB | $0.0487 | $0.0212 |
| Price | $194.99 | $84.65 |
| 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 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 offers better value at $0.0212//GB compared to the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ at $0.0487//GB — that's roughly 57% less per gigabyte.
The best deal for the 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 is $84.65 at Newegg, while the Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ starts at $194.99 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 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ and 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 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 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 a better deal?
As of June 2026, 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 offers better value at $0.0212//GB compared to Western Digital 4TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD43PURZ at $0.0487//GB. That is approximately 57% 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 $0.0487/GB ($194.99 for 4 TB) at Amazon.
Where can I buy 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 for the cheapest price?
The cheapest price for the 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 is $84.65 at Newegg, which works out to $0.0212/GB.