The WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive costs $0.0380/GB while the Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black costs $0.0315/GB. Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers 17% better value per gigabyte as of June 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive vs Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black — Which Is Better Value?
Specification Comparison
| Spec | WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive | Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 22TB | 20 TB |
| $/GB | $0.0380 | $0.0315 |
| Price | $834.99 | $629.99 |
| 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 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers better value at $0.0315//GB compared to the WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0380//GB — that's roughly 17% less per gigabyte.
The best deal for the Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black is $629.99 at Best Buy, while the WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive starts at $834.99 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 WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive and Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive or Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black a better deal?
As of June 2026, Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black offers better value at $0.0315//GB compared to WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive at $0.0380//GB. That is approximately 17% better value per gigabyte.
What is the price per GB of WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive?
The WD Purple Pro WD221PURP 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive is currently priced at $0.0380/GB ($834.99 for 22TB) at Newegg.
Where can I buy Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black for the cheapest price?
The cheapest price for the Seagate - Expansion 20TB External USB 3.0 Desktop Hard Drive with Rescue Data Recovery Services - Black is $629.99 at Best Buy, which works out to $0.0315/GB.