The WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive costs $0.0568/GB while the Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray costs $0.0337/GB. Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray offers 41% better value per gigabyte as of September 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive vs Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray — Which Is Better Value?
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Specification Comparison
| Spec | WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive | Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 8TB | 8 TB |
| $/GB | $0.0568 | $0.0337 |
| Price | $454.45 | $269.99 |
| Retailer | Newegg | 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 - Seagate One Touch Desktop HDD 8 TB - Space Gray offers better value at $0.0337//GB compared to the WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive at $0.0568//GB — that's roughly 41% less per gigabyte.
The best deal for the Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray is $269.99 at Best Buy, while the WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive starts at $454.45 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive and Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive or Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray a better deal?
As of September 2026, Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray offers better value at $0.0337//GB compared to WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive at $0.0568//GB. That is approximately 41% better value per gigabyte.
What is the price per GB of WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive?
The WD Purple WD84PURZ 8TB 5640 RPM 128MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive Bare Drive is currently priced at $0.0568/GB ($454.45 for 8TB) at Newegg.
Where can I buy Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray for the cheapest price?
The cheapest price for the Seagate - Seagate One Touch Desktop HDD 8 TB - Space Gray is $269.99 at Best Buy, which works out to $0.0337/GB.