The Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ costs $0.0404/GB while the Seagate - Expansion Desktop 8TB HDD - Black costs $0.0350/GB. Seagate - Expansion Desktop 8TB HDD - Black offers 13% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ vs Seagate - Expansion Desktop 8TB HDD - Black — Which Is Better Value?
Seagate - Expansion Desktop 8TB HDD - Black
Specification Comparison
| Spec | Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ | Seagate - Expansion Desktop 8TB HDD - Black |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 8 TB | 8 TB |
| $/GB | $0.0404 | $0.0350 |
| Price | $322.99 | $279.99 |
| Retailer | Amazon | Best Buy |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate - Expansion Desktop 8TB HDD - Black offers better value at $0.0350//GB compared to the Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ at $0.0404//GB — that's roughly 13% less per gigabyte.
The best deal for the Seagate - Expansion Desktop 8TB HDD - Black is $279.99 at Best Buy, while the Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ starts at $322.99 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 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ and Seagate - Expansion Desktop 8TB HDD - Black product page for detailed specifications and price history.
Frequently Asked Questions
Is Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ or Seagate - Expansion Desktop 8TB HDD - Black a better deal?
As of July 2026, Seagate - Expansion Desktop 8TB HDD - Black offers better value at $0.0350//GB compared to Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ at $0.0404//GB. That is approximately 13% better value per gigabyte.
What is the price per GB of Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ?
The Western Digital 8TB WD Blue PC Internal Hard Drive HDD - 5640 RPM, SATA 6 Gb/s, 256 MB Cache, 3.5" - WD80EAAZ is currently priced at $0.0404/GB ($322.99 for 8 TB) at Amazon.
Where can I buy Seagate - Expansion Desktop 8TB HDD - Black for the cheapest price?
The cheapest price for the Seagate - Expansion Desktop 8TB HDD - Black is $279.99 at Best Buy, which works out to $0.0350/GB.