The Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive costs $0.0312/GB while the Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ costs $0.0300/GB. Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ offers 4% better value per gigabyte as of April 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive vs Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ — Which Is Better Value?
Specification Comparison
| Spec | Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive | Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ |
|---|---|---|
| Brand | Seagate | Western Digital |
| Capacity | 8 TB | 8 TB |
| $/GB | $0.0312 | $0.0300 |
| Price | $249.61 | $239.99 |
| Retailer | Amazon | Amazon |
| 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 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ offers better value at $0.0300//GB compared to the Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive at $0.0312//GB — that's roughly 4% less per gigabyte.
The best deal for the Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ is $239.99 at Amazon, while the Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive starts at $249.61 at Amazon.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive and Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive or Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ a better deal?
As of April 2026, Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ offers better value at $0.0300//GB compared to Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive at $0.0312//GB. That is approximately 4% better value per gigabyte.
What is the price per GB of Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive?
The Seagate 8TB 3.5" Expansion Desktop USB 3.0 External Hard Drive is currently priced at $0.0312/GB ($249.61 for 8 TB) at Amazon.
Where can I buy Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ for the cheapest price?
The cheapest price for the Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ is $239.99 at Amazon, which works out to $0.0300/GB.