The WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) costs $0.0597/GB while the Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) costs $0.0315/GB. Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) offers 47% better value per gigabyte as of July 2026. Both products are available on BuyPerUnit with prices from Amazon, Best Buy, and Newegg.
WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) vs Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) — Which Is Better Value?
Specification Comparison
| Spec | WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) | Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) |
|---|---|---|
| Brand | Western Digital | Seagate |
| Capacity | 20TB | 20TB |
| $/GB | $0.0597 | $0.0315 |
| Price | $1194.36 | $630.00 |
| 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 WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) at $0.0597//GB — that's roughly 47% 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 WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) starts at $1194.36 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 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) and Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) product page for detailed specifications and price history.
Frequently Asked Questions
Is WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) or Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) 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 WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) at $0.0597//GB. That is approximately 47% better value per gigabyte.
What is the price per GB of WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN)?
The WD 20TB My Book Duo Desktop RAID External Hard Drive 256-Bit AES Encryption - USB 3.2 Gen1 (WDBFBE0200JBK-NESN) is currently priced at $0.0597/GB ($1194.36 for 20TB) at Newegg.
Where can I buy Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) for the cheapest price?
The cheapest price for the Seagate Exos X20z ST20000NM001J 20TB 7.2K RPM SATA 6Gb/s 3.5 (HOST MANAGED SMR) is $630.00 at Newegg, which works out to $0.0315/GB.