The 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 costs $0.0212/GB while the Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ costs $0.0433/GB. 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 offers 51% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 vs Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ — Which Is Better Value?
Specification Comparison
| Spec | 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 | Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ |
|---|---|---|
| Brand | HP | Western Digital |
| Capacity | 4TB | 6 TB |
| $/GB | $0.0212 | $0.0433 |
| Price | $84.65 | $259.99 |
| Retailer | Newegg | Amazon |
| 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 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ at $0.0433//GB — that's roughly 51% 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 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ starts at $259.99 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 and Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ product page for detailed specifications and price history.
Frequently Asked Questions
Is 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 or Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ 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 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ at $0.0433//GB. That is approximately 51% better value per gigabyte.
What is the price per GB of 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004?
The 861683-B21 HPE 4TB 7.2K 6Gbps 3.5' Midline SATA Hard Drive 861685-003 846522-004 is currently priced at $0.0212/GB ($84.65 for 4TB) at Newegg.
Where can I buy Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ for the cheapest price?
The cheapest price for the Western Digital 6TB WD Purple Surveillance Internal Hard Drive HDD - SATA 6 Gb/s, 256 MB Cache, 3.5" - WD64PURZ is $259.99 at Amazon, which works out to $0.0433/GB.