The Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) costs $0.0344/GB while the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ costs $0.0521/GB. Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) offers 34% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) vs WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ — Which Is Better Value?
Specification Comparison
| Spec | Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) | WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 8 TB | 8TB |
| $/GB | $0.0344 | $0.0521 |
| Price | $275.00 | $416.99 |
| 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 Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) offers better value at $0.0344//GB compared to the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ at $0.0521//GB — that's roughly 34% less per gigabyte.
The best deal for the Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) is $275.00 at Amazon, while the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ starts at $416.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) and WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) or WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ a better deal?
As of July 2026, Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) offers better value at $0.0344//GB compared to WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ at $0.0521//GB. That is approximately 34% better value per gigabyte.
What is the price per GB of Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004)?
The Seagate BarraCuda 8 TB Internal Hard Drive HDD – 3.5 Inch SATA 6 Gb/s, 5,400 RPM, 256 MB Cache for Computer Desktop PC (ST8000DMZ04/004) is currently priced at $0.0344/GB ($275.00 for 8 TB) at Amazon.
Where can I buy WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ for the cheapest price?
The cheapest price for the WD Purple 8TB Surveillance Internal Hard Drive HDD - SATA 6Gb/s 256MB Cache 3.5 Inch - WD85PURZ is $416.99 at Newegg, which works out to $0.0521/GB.