The Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) costs $0.0315/GB while the SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive costs $0.0620/GB. Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers 49% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) vs SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive — Which Is Better Value?
Specification Comparison
| Spec | Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) | SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive |
|---|---|---|
| Brand | Seagate | SanDisk |
| Capacity | 20TB | 22TB |
| $/GB | $0.0315 | $0.0620 |
| Price | $630.00 | $1364.99 |
| Retailer | Newegg | Newegg |
| Category | Hard Drives (HDD) | Hard Drives (HDD) |
| Subcategory | hdd | hdd |
Price Across Retailers
Which Should You Buy?
Based on current pricing data, the Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers better value at $0.0315//GB compared to the SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.0620//GB — that's roughly 49% less per gigabyte.
The best deal for the Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) is $630.00 at Newegg, while the SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive starts at $1364.99 at Newegg.
However, price per gigabyte isn't everything — consider factors like warranty, performance specs, brand reliability, and your specific capacity needs. Check each Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) and SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive product page for detailed specifications and price history.
Frequently Asked Questions
Is Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) or SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive a better deal?
As of July 2026, Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers better value at $0.0315//GB compared to SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive at $0.0620//GB. That is approximately 49% better value per gigabyte.
What is the price per GB of Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR)?
The Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) is currently priced at $0.0315/GB ($630.00 for 20TB) at Newegg.
Where can I buy SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive for the cheapest price?
The cheapest price for the SanDisk Professional 22TB G-DRIVE PROJECT Thunderbolt 3 External Hard Drive is $1364.99 at Newegg, which works out to $0.0620/GB.