The WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP costs $0.0455/GB while the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray costs $0.0325/GB. Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray offers 28% 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 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP vs Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray — Which Is Better Value?
Specification Comparison
| Spec | WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP | Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 22TB | 20 TB |
| $/GB | $0.0455 | $0.0325 |
| Price | $999.99 | $649.99 |
| 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 20 TB - Space Gray offers better value at $0.0325//GB compared to the WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP at $0.0455//GB — that's roughly 28% less per gigabyte.
The best deal for the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray is $649.99 at Best Buy, while the WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP starts at $999.99 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 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP and Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray product page for detailed specifications and price history.
Frequently Asked Questions
Is WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP or Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray a better deal?
As of July 2026, Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray offers better value at $0.0325//GB compared to WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP at $0.0455//GB. That is approximately 28% better value per gigabyte.
What is the price per GB of WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP?
The WD Purple Pro 22TB 7200 RPM 512MB Cache SATA 6.0Gb/s 3.5' Internal Hard Drive - WD221PURP is currently priced at $0.0455/GB ($999.99 for 22TB) at Newegg.
Where can I buy Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray for the cheapest price?
The cheapest price for the Seagate - Seagate One Touch Desktop HDD 20 TB - Space Gray is $649.99 at Best Buy, which works out to $0.0325/GB.