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 $0.0312/GB while the WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) costs $0.0545/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 43% better value per gigabyte as of September 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 My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) — Which Is Better Value?
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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 My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 8 TB | 8TB |
| $/GB | $0.0312 | $0.0545 |
| Price | $249.99 | $436.39 |
| Retailer | Amazon | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
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)
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 $0.0312//GB compared to the WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) at $0.0545//GB — that's roughly 43% 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 $249.99 at Amazon, while the WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) starts at $436.39 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 My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) 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 My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) a better deal?
As of September 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 $0.0312//GB compared to WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) at $0.0545//GB. That is approximately 43% 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 $0.0312/GB ($249.99 for 8 TB) at Amazon.
Where can I buy WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) for the cheapest price?
The cheapest price for the WD My Book 8TB Desktop External Hard Drive for Windows/Mac/Laptop, USB 3.0 Black (WDBBGB0080HBK-NESN) is $436.39 at Newegg, which works out to $0.0545/GB.