The WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP costs $0.0562/GB while the Seagate - Expansion Desktop 8TB HDD - Black costs $0.0350/GB. Seagate - Expansion Desktop 8TB HDD - Black offers 38% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP vs Seagate - Expansion Desktop 8TB HDD - Black — Which Is Better Value?
Seagate - Expansion Desktop 8TB HDD - Black
Specification Comparison
| Spec | WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP | Seagate - Expansion Desktop 8TB HDD - Black |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 8TB | 8 TB |
| $/GB | $0.0562 | $0.0350 |
| Price | $449.99 | $279.99 |
| 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 - Expansion Desktop 8TB HDD - Black offers better value at $0.0350//GB compared to the WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP at $0.0562//GB — that's roughly 38% less per gigabyte.
The best deal for the Seagate - Expansion Desktop 8TB HDD - Black is $279.99 at Best Buy, while the WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP starts at $449.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP and Seagate - Expansion Desktop 8TB HDD - Black product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP 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 WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP at $0.0562//GB. That is approximately 38% better value per gigabyte.
What is the price per GB of WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP?
The WD Purple Pro 8TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5' Hard Drives Bare Drive - WD8002PURP is currently priced at $0.0562/GB ($449.99 for 8TB) at Newegg.
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.